What Happens if You Eat NOTHING for 3 Days

Discover what happens inside your body as you fast for 3 days, 5 days, and 7 days. Intermittent fasting has many benefits, but it also has some drawbacks. Extended water fasting can result in some negative effects. But how long does it take for fasting to cause muscle loss, headaches, and extreme hunger? Find out what happens when you stop eating.
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After you eat a meal, your body enters an anabolic state, where food is broken down into simpler molecules and used as fuel so your organs can function properly. An organ in the abdomen known as the pancreas produces insulin which is a hormone that regulates the process of breaking down and metabolizing primarily carbohydrates but also protein. So insulin is the hormone that helps the cells absorb the glucose found in the bloodstream after a meal. Dietary fat, on the other hand, is broken down into fatty acids which are used by the body for energy as well as for many different biological processes like testosterone production for example. Excess fatty acids are converted back to triglycerides and then most of those triglycerides are stored in adipose tissue otherwise known as body fat.
Meanwhile, excess carbohydrates from that meal will first get converted into glycogen which is a string of glucose molecules that can be stored and used later. Glycogen is mostly stored in the liver and your muscles. Since there's a biological limit to how much glycogen a person can store, once that limit is reached the rest of the excess energy is converted into triglycerides and stored as adipose tissue, otherwise known as body fat. This is the routine process that our bodies go through when we eat throughout the day. But what would happen if you chose to stop eating for 3 days straight?
Well after about 6-10 hours of fasting, most of the glucose that's still circulating in your bloodstream will be used for fuel. At that point, your body will start shifting from an anabolic to a catabolic state. Since it's not receiving any new nutrients, your body has to start using its own glycogen reserves to fuel itself. It's at that point that the pancreas secretes glucagon. Glucagon is not the same as glycogen or glucose. It's actually a hormone, and one of its jobs is to signal your body to release glycogen and fatty acids. Also if your last meal was low in carbohydrates your body may start producing ketones as an energy source within this early stage of fasting. Ketones are chemicals produced by the liver when fat cells are converted into fatty acids. So in general during those first 6 hours, your blood glucose levels will start to elevate and then they'll gradually decline. Meanwhile, your ketone levels will do pretty much the opposite. They'll gradually rise, especially after approximately the 10th hour of fasting. (1)
Now before you ever hit that 10th-hour mark, if you’re accustomed to eating three meals per day or you regularly eat a high-carb diet you'll probably experience hunger and low energy levels. If you ignore this hunger and continue fasting for at least 10 hours your body will start to increase the levels of a hormone produced by the pituitary gland called Human Growth Hormone otherwise known as (HGH). Fasting can actually increase HGH just as effectively as exercise, stress, and very low blood sugar, also known as hypoglycemia. (2) HGH plays an important role in the fasting process because it's associated with enhanced muscle growth, exercise performance, better body composition, a faster metabolic rate, stronger immunity, and faster recovery from injuries. (3) Although HGH is unlikely to lead to muscle growth in the absence of nutrients while you're fasting, it's believed to be responsible for delaying the breakdown of muscle. So it helps prevent muscle loss while fasting. It does this by stimulating metabolic processes such as protein synthesis and muscle tissue repair. According to research, the longer you fast, the more HGH you'll produce. For example, a study found that fasting for just two days increased HGH production by 5X. (4)
Now at around 12-16 hours in, depending on how many carbs you normally eat, your body will continue to deplete its glycogen stores, while also increasing its reliance on ketone bodies. (5) The benefits of this initial period of fasting have been well documented because multiple studies have been designed to observe people fasting for Ramadan, which is a Muslim holiday where people stop eating food from dawn to sunset, every day for one month. The studies on this topic all provide an excellent overview of the benefits that fasting for 10-17 hours daily has on the human body. According to the findings, there's great improvement in weight management, digestion, and cholesterol levels. (6). Also, some studies show a significant decrease in inflammation markers associated with a number of diseases such as homocysteine, C-reactive protein...

[@GravityTransformation]

References: 1. During the first few hours of fasting your blood glucose levels will start to elevate and then they'll gradually decline. Meanwhile, your ketone levels will gradually rise. See Fig 1C pubmed.ncbi.nlm.nih.gov/27810402/#&gid=article-figures&pid=fig-1-uid-0 pubmed.ncbi.nlm.nih.gov/27810402/ 2. Fasting for at least 10 hours is proven to increase Human Growth Hormone (HGH) levels just as effectively as exercise, stress, and very low blood sugar, also known as hypoglycemia. pubmed.ncbi.nlm.nih.gov/22386777/ 3. HGH, a hormone produced by the pituitary gland, plays a major role in muscle growth, exercise performance, body composition, cell repair, metabolism, immunity system, and recovery from injury and disease. www.ncbi.nlm.nih.gov/pubmed/12797841 www.ncbi.nlm.nih.gov/pubmed/9931532 4. A small study of nine men discovered that fasting for just two days increased HGH production by five times. www.ncbi.nlm.nih.gov/pubmed/1548337 5. After 12-16 hours, the body switches to burning more and more fat tissues compared to carbs. pubmed.ncbi.nlm.nih.gov/32519900/ 6. During the month of Ramadan, there is a great improvement in weight management, digestion, and cholesterol levels. pubmed.ncbi.nlm.nih.gov/17909674/%5d pubmed.ncbi.nlm.nih.gov/33575269/ 7. In addition, some studies indicate a significant decrease in inflammation markers associated with cardiovascular disease risk factors such as homocysteine, C-reactive protein (CRP), and total cholesterol TC/HDL ratio. www.ncbi.nlm.nih.gov/pubmed/23244540 www.ncbi.nlm.nih.gov/pubmed/17374948 8. Ketones production accelerated as blood sugar levels are low and glycogen reserves are depleted. www.ncbi.nlm.nih.gov/books/NBK534877/ 9. Inflammation exponentially decreases and there is a huge spike in HGH and Brain-derived neurotrophic factor (BDNF). www.ncbi.nlm.nih.gov/books/NBK534877/ 10. Several factors upregulate autophagy, including caloric restriction and starvation as well as increased levels of GH and BDNF www.sciencedirect.com/science/article/pii/S1550413117303479 www.nature.com/articles/ncb0910-842 11. This process has therapeutic benefits for both your lifespan and the aging process. www.tandfonline.com/doi/abs/10.4161/auto.1.3.2017 12. Men will experience a 4-fold greater increase than women in plasma-free fatty acids. See Figure 1 C www.ncbi.nlm.nih.gov/pmc/articles/PMC3276482/figure/fig1/ www.ncbi.nlm.nih.gov/pmc/articles/PMC3276482/ 13. Headaches are also more frequent by the first day of fasting and can persist, regardless of hydration. pubmed.ncbi.nlm.nih.gov/19472450/ pubmed.ncbi.nlm.nih.gov/15613218/ 14. Ghrelin levels, which signal hunger, continue to rise, despite studies showing no subjective increase in hunger. p302.zlibcdn.com/dtoken/5e980f6ec824931e02f1152d98e1f864/j.clnu.2016.03.011.pdf 15. A clinical study suggests that “this increase in ghrelin levels might be another mechanism that stimulates HGH release. pubmed.ncbi.nlm.nih.gov/11834429/#:~:text=As%20ghrelin%20administration%20in%20man,in%20stimulation%20of%20GH%20release. 16. “accepted as beneficial due to its role in eliminating 'toxic assets' and promoting cell viability" www.ncbi.nlm.nih.gov/pmc/articles/PMC2990190/ 17. All the data shows that fasting can improve cognitive deficits, neuroinflammation, memory, and learning. www.sciencedirect.com/science/article/abs/pii/S009130222100073X 18. Moreover, a 2015 study’s finding suggests that fasting upregulated BDNF by approximately 3.5-fold cdnsciencepub.com/doi/abs/10.1139/apnm-2014-0290 19. “improvements in mood, alertness, and tranquility”. www.sciencedirect.com/science/article/abs/pii/S0165178112008153 20. After 3 days of fasting the processes of disease reversal, autophagy, and cancer protection that were explained continue at a deeper level, and HGH levels increase by 300%. pubmed.ncbi.nlm.nih.gov/6758355/ 21. There is also evidence that the body starts creating hematopoietic stem cells which are new cells that regenerate the organism www.ncbi.nlm.nih.gov/pmc/articles/PMC4102383/ 22. Ketones are produced in greater quantities during the first few days of fasting, and after the fifth day, the levels are more or less neutralized. The rate of weight loss also slows down, with a maximum of 0.9 kg lost per day in the first few days of fasting. See figures www.ncbi.nlm.nih.gov/pmc/articles/PMC1274154/ www.ncbi.nlm.nih.gov/pmc/articles/PMC1274154/ 23. The body is still avoiding protein catabolism and muscle breakdown as ketone levels rise and take over as the primary energy source. pubmed.ncbi.nlm.nih.gov/6758355/ 24. But, after the third day, a study demonstrates that the glutamine concentration in skeletal muscles falls by 34%. pubmed.ncbi.nlm.nih.gov/2593832/ 25. Negative potassium and nitrogen balances worsen after the third day. www.sciencedirect.com/science/article/abs/pii/0026049568900619 26. Most studies have been conducted on animals, and it remains to be seen whether all the benefits would be the same in humans. www.mdpi.com/2072-6643/11/10/2501 27. "calorie restriction and intermittent fasting help maintain a healthy brain" See figure one pubmed.ncbi.nlm.nih.gov/31565158/#&gid=article-figures&pid=figure-1-uid-0 pubmed.ncbi.nlm.nih.gov/31565158/

[@sandra19771503]

Hi. I want to lose weight with fasting. What and how much can I eat after 2 to 3 days fasting? Should I eat 1 meal and then start fasting again. What do do after the 3 day fasting

[@FinestFighters]

@gravity So what happends when you are using testosteron and winny and then fast?

[@dumbsmartofficial2976]

What activity is happening during fasting, is it restful or normal day w/workout?

[@kurtschulten5369]

Fasting for more than 12 hours slows your metabolism and accelerates muscle loss. The exact opposite of what you're trying to accomplish. Funny that these "experts" don't mention that.

[@FestiveParrot]

Circadian stems from the words circa diem, and do you prnounce circa as Kirka?

[@johndoe3821]

Who else is here because they are in the middle of a fast?😂

[@kittybee2592]

I watch this every time I fast! It reinforces all the benefits into my brain over and over ❤

[@MrKeepnit100]

24 hours in got 48 to go

[@lAristides]

Me lol

[@anul6801]

Day 4

[@mozaffarimidia]

@@kittybee2592ja

[@Florida_May]

I’m in my 50th hour and this video is giving me motivation to make it to my 72nd hour. My first water fast

[@gutswithdrip879]

How was it? What benefits did you notice?

[@jonathanlavery]

I just finished my first 72hr fast today. I feel great.

[@asd2124]

do you eat anything or just drink water ? @@jonathanlavery

[@Sim-po1mc]

@@jonathanlaveryi did 24 hours before, but in going for 48 now, im a little fatty but im still scared of doing it

[@jonathanlavery]

@@Sim-po1mc you can do it. If you push through the hunger strikes it’s not as bad as it sounds.

[@CheckingINN]

I’ve done 3 day fasts multiple times and the benefits are real. Particularly noticeable is the change in skin, weight loss, and the autophagy. It does feel like a total reset and healing of the body in a short time. I think this the way humans always lived and are meant to live. Our bodies were made to thrive in feast/famine but now we are always in “feast” mode with an excess of food everywhere, every day, multiple times a day. On top of that what many eat is pure junk and sugar is the worst for our health. There is healing in famine mode as well!

[@Coyote-tc1ww]

Do a five day, make sure you do electrolytes

[@ZippyG]

@@Soidog23yeah it’s super addictive too, whenever I go back to it I jus wanna keep drinking or eating it

[@ZippyG]

@@Soidog23 feel better without it tho, body deserves the discipline 💙

[@jp_jas]

do you do it while going to work? I’ve seen so many reviews of people on 2-3 fast days that they feel so exausted in that time

[@CheckingINN]

@@jp_jas my ideal schedule is the first 1-2 days while working and the last 1.5-2 days a weekend day so I can rest if needed. I just never know how I’m going to feel. Some times I feel so energetic that I even want to workout. And sometimes I can barely think and need to sit down. For me it’s best to be home especially toward the end of the fast for safety, instead of out and about driving, on calls, etc.

[@stan404notfound]

Anyone else like watching fasting benefit videos while fasting? Currently 27 hours and climbing

[@EmpressShabazz]

Yes!! Almost at 72 hours I can see the finish line 👏🏾

[@DeenForeverr]

Can we drink water?

[@JoannaHammill]

Yes, really gives me motivation - I’m on my 3rd 48 hour fast - I’ve also done 2 x 72 hour fasts -3 months apart

[@Jabx84]

I do this for every diet or fitness challenge I give myself. It’s very motivating!

[@leahirungu6881]

Yes 12 hours into my 72 hours goal🎉

[@guinessbeer]

I just finished a 72 hr fast. First time trying anything more than 24 hrs. It wasn’t as hard as I thought it would be. Day two dinner was quite tough to get my mind off of but once that hump was gone I was almost there. My body looks amazing afterwards. My muscles are popping out, I lost 7 lbs. my skin seems better and I feel like I was able to reset and heal my body. Definitely recommend trying it.

[@karlvann5840]

I’m 16 hours in.. feeling great

[@chef423]

GO!

[@gilnoama]

is drinking water allowed while fasting?

[@s_t_r_e_l_0_o_k818]

good to hear your accomplishment but if I may as: when u say fasting for 3 days do u mean taking water only? or do you drink some sugar-free tea or coffee during that?

[@sebastianmallon343]

@@gilnoamayes definitely

[@MrDazana]

I started fasting in June 2022. I was 220 lbs., blood pressure 140/95 and borderline type 2 diabetic. As of today, I'm 180lbs BP 119/75 and no longer on the radar of type 2 diabetic. I'm 47 years old and fasting got me to understand my body especially in what I eat. I now eat 4 hours in a day and every 2 weeks I'll pull off a 48 hour. I will continue to do this until I reach my goal of 160lbs. The best thing about fasting is that it costs nothing to do. No miracle drugs, shakes nothing. I'm living like my great grandfather did.

[@mmljane]

This is what I wanted to know? Can you pretty much fast 48 hours eat two sensible meals the fourth day. Then go back to fast 48 hours & repeat until you reach your goal weight?

[@MrDazana]

@@mmljane Everybody is different it all depends on how you feel. I switched to 48 hours every 2 weeks because I was doing it weekly and I was always tired.

[@mmljane]

@@MrDazana thank you, that's interesting

[@mifratic]

you can do it! keep going :)

[@LynSkyn1981]

Can you at least drink water during those three days?

[@wkbutcher]

I have done a 21 day fast. the first three days were the hardest, then hunger went away... yes, really. (from day 4: I could be at a table with other folks eating and it did not bother me). blood pressure dropped... cholesterol dropped... leaving type 2 diabetes behind... joint pain disappeared... of course, significant fat loss (260 to 230... more precisely to 260 to 222 to 230)... concentration improved dramatically... able to focus for longer.... irritability decreased (outside of first three days when I was hangry)... This is a great video for concise delivery of info... based on my experience (no, i am not a Dr. and I am only one data point) I think it mistakenly undersells longer (week or more) fasts (particularly for those with more fat) because I felt great for most of the 21 days. I got a headache on day 21 and decided to stop (not sure if headache was caused by fasting... it could have been... so that is why I stopped... if it was not, I wish I had kept going...). This may sound strange to someone who has not done a fast, but it felt great to be on that fast.... and great when it was over (very important based on my experience: slowly re-introduce easy to digest foods if you go that long... i limited to clear broths and vegetables for first few days)... i have done other, shorter fasts (mostly in the week long timer frame... one was two weeks) because of the success of that fast... For me, there is lots of weight loss in the first few days, and then it slows down. After multiple fasts, I think the real weight loss for me is about a pound a day (becasue you do put on some weight when you start eating again)... but the real victory is the increased energy, happier persona, lower blood pressure, no more type 2 diabetes medication, no more ADHD medication, no more ibuprofen every day, and real food tastes great again (my taste buds were reset so fruits and vegetables taste better than processed foods... ). Note: I also gave up caffeine during that time and that was harder than the first two days of the fast (vicious caffeine withdrawal headache on day 2, then went away on day 3). I could write a lot more... but his is probably already too long to read

[@KaysunEntertainment]

Thanks for the info. Did you notice any muscle loss after the 3 days?

[@ShauhuaGu]

Ive thought after 6th day not eating wed be dead how you not eat for 21 day? That must be miracle. Today is my 2nd days not eating at all feel very hungry. I have gout hurt so much so dont feel like to eat esplyy hurt so much from seafood buffet cause it I bet. I might go on 3 days not eating if some benefits from it thats it. Heard fasting help heal gout faster. Before this i only eat every other day for 6 days now that's why make case even worse to handle.

[@Mbalings]

How did it go? ​@@ShauhuaGu

[@Brandon-ml2zw]

To be clear, you didn’t eat ANYTHING or drink anything except water for 21 days?

[@Dregohard609]

@@Brandon-ml2zwhell no. He’d be dead ofc eating lol you just can’t eat no crazy ass food. Fruits nuts and veggies

[@RamiAgonistes]

Very impressed by the amount of information that you're giving out. Very well organized and explained. It's no wonder you have almost 6 million subscribers!

[@dalecaruso2052]

It's called fasting but time goes by slow.

[@muntih.510]

Time moves slow -BadBadNotGood ft. Samuel T Herring

[@jeanrojas4267]

😂

[@everydayvacaytaj]

Word

[@samyakvankudre6478]

Too real it be like everything is in slow motion

[@nsmilitia]

But fasting starts the healing process fast

[@orangedragon4713]

Just in the first 1min of this video you have given a very easy understanding crashcorse that others took 20mins to explain. This video is very well made and fast pace to keep you engaged. Keep it up! Love it!

[@rayperez3426]

I've seen numerous videos and read several books on fasting. This video is by far the best detailed video on fasting. You covered everything from A thru Z. Great Job, I'm going to pass this on to all my friends who are intrested in fasting.

[@tnen559]

Maaan, I've watched a lot of these explanation videos by all the big fasting/keto influencers, both this one is by far the most detailed one! Well done

[@huxinfilm249]

this is the most direct, efficient & information packed video i’ve seen regarding fasting in a really long time. you’ve done your homework, good stuff

[@dr.chrisketo7193]

Absolutely the best summary of all

[@mackes3683]

Great video, again! You explain the science and molecular mechanisms interesting and easy to understand for people without a background in biomedical research. You back up your teaching with peer reviewed publications indexed on pubmed. Your fitness channel is all I need and I follow most of the advice you give for my exercise routine. Thanks for all your effort!

[@timdefor8858]

I’m on day 4. I haven’t decided how long to go. I lost 25 lbs a few years ago and was in the best shape of my adult life. I let 20 lbs return over 3 years. I needed to get control. I have used Intermittent fasting for years, but I didn’t restrict the amount or kinds of foods and I paid the price. So far, I’m down 8 lbs., clothes fit better, I have more mental acuity, my self-control in other areas has improved, I sleep better, shoulder pain from an injury a couple months ago has subsided, I can get off the couch without having to move slowly because of stiffness discomfort, and my mood has improved. I may go up to 20 days, but will likely stop after 5 and restart after 3 days if limited eating on a IF 16:8 pattern. Thank you for the encouragement and the cautions.

[@kevin-qc7zv]

Is it wise to exercise while fasting?

[@timdefor8858]

@@kevin-qc7zv yes, I think so. I’ve seen information that suggests that exercise during fasting can help promote muscle retention and tone while releasing positive hormones.

[@DieselNutz]

20 days lol you won’t

[@bobkelly3162]

Excellent, no fluff presentation. Packs a tremendous amount of good information into a small time slot. Thanks to the creator.

[@alext2639]

Best video explanation of fasting on the internet ! Hands down !!!! Very informative . Such an amazing video ! Thank you so much :)

[@richardradcliffe9161]

I did a three day water fast last week. I find I don't feel good, slightly off, the whole time. And I did add electrolytes. But starting with the bone broth that I used to break the fast, and for the next three days after the fast, I felt terrific. Healthy and strong like I was 20 years younger. I'm 68.

[@Youtubeuser10873]

What is the electrocyte

[@Bobby_-_]

@@KZbinuser10873 vitamins and minerals

[@drive-2786]

careful with popping them blue pills grandpa

[@dimaknopf]

It's important to get as many nutrients as you can during feeding days with added support from vitamins a good protocol is to saute green veggies with eggs in olive oil and eat it with a multivitamin with some fermented food like sauerkraut or yogurt. This ensure you have the bacteria and enzymes to pull as many of the nutrients into your body as you can so you're not deficient when fasting.

[@zaynmalik1243]

Bro I try for 1 week it's awesome for me 😊 but I don't about others

[@troyharris8989]

This video is perfect. Not too long, but deep enough for clarity and understanding. jus what I was looking for. Thank you Sir...

[@mirkomatitia9121]

Amazing content! Extremely precise and concise and very good use of effective teaching. Thank you very much Brother !!

[@williamsullivan7635]

This was the best video that I have ever seen on the internet as long as I have been on it.I can not thank you enough for this incredible insight on the human body.I am in the process of starting my first 36 hr fast.I am 5 hrs in and very excited to start my new, every other day, fasting regimen,with minimal consumption in between great information really good stuff! Good looking out man 😁

[@openmind8620]

I've been doing various forms of fasting for 10+ years and this is one of, if not the best, summary I've seen. Packed with info and concise. Many thanks.

[@stevemoore2730]

See dry fasting

[@halfmanhalfamazing7392]

@@stevemoore2730 I can only dry fast for 3 days, after that I get light headed, I'm will be working on dry fasting for 8 days though. It is said that, after 8 days of dry fasting your body can start to break down and parts will start to fail like your kidneys.

[@komlat253]

@@halfmanhalfamazing7392 u mean starving? Lol. I've done 3 and half days of nothing only once

[@halfmanhalfamazing7392]

@@komlat253 God is Great, that's all I can tell you. I guess Muhammad and Jesus starved themselves. NO THEY DIDN'T SIR.

[@komlat253]

@@halfmanhalfamazing7392 just a joke. I practice intermittent fasting my whole adult life. Only when I get like super bored do I even eat 2 times in a day. And I don't remember the last time I've ate 3 Times in a day. Altho it's been a few years since I've gone without food for more than 35 hours . Just been too lazy to do a 3 days fast I guess. But I always think about but I'm also recently thinking about gaining muscle haha

[@micheldebievre5423]

This is the best video I’ve seen after reading 10 years about autophagy. Congrats. I did autophagy for the first time in September 2021 with a burn out after covid. I was gonna go for 3 days. The first 2 days were a bit tricky but after 36 hours you can really feel the autophagy kicking in. I had never felt so much energy in my body ever since I’m born (all the contrary one would expect). Clear thinking, laser sharp eyes, even your smell becomes so sharp. The next thing I found myself doing push-ups and took the kettle bell and then took my mountain bike for a ride. So then I decided…wow that goes well, let’s extend to 7 days. The only reason I broke the fasting after one week is social pressure (friends employees and family being in disbelieve). So u need to be careful when you reboot your system. I did it again one month ago (7 days) and decided to remain in keto mode. It’s simply amazing since I don’t crave for snacks or stuff and I eat once or twice a day. Constant energy levels are the secret since your insulin levels keep down. That means that I keep on loosing fat while my intake of proteins promotes my muscle mass. This video is real, I can testify. And I’ve already sent it to numerous friends. Thank You for doing this

[@ritzyb2378]

Very well explained

[@KaysunEntertainment]

Great! Did you find you lost any muscle mass after the 3rd - 7th day?

[@williamgoss4691]

A really great video on fasting. A huge amount of concentrated, detailed and really useful info given at a great speed. Excellent, Thks

[@MikeFico998]

Packed with knowledge as usual keep it up man! We appreciate you-

[@linda7345n]

What an excellent tutorial! I learned many things I was unaware of. Thanks so much!

[@reginaldmudaly3247]

Dude! Your information and your delivery is on another level entirely. Appreciated Man!

[@perrysrawsoul]

Totally agree

[@coltclouse7561]

Absolutely amazing. This is exactly the kind of deep dive into biochemistry that ive been wanting all my life

[@thebutcher5032]

I have watched many many gravity transformation videos. I can honestly say I have never seen this much information in one video. Thanks a lot Max

[@vitoanania6042]

it's probably the clearest video on fasting ever made, and I watched tons of them. perhaps he could dwell a bit more on autophagy's benefits

[@TheKetoJudge]

I’ve done prolonged fasting 6 times and my last time recently I worked up to 84hours. It seemed simple to me after the 48hour mark, but it worried me some so I cut it off at 84. I felt fine and could’ve went longer. The only negative effect i noticed was mood swings!

[@mariomm506]

Well explained. I am a fasting believer, this video (more data, more science) was just the motivation I needed. Thank you!!!

[@victorpham4221]

This is an excellent video. Summarized some topics in my Biochemistry class. Thank you for the research!

[@BigElie]

Been intermediate fasting and on a calorie deficit for nearly a year now. Can't believe how much muscle I have gained when you also include some hypertrophy training and light cardio. Lost close to 30kgs

[@XplosionYT]

Good job!

[@tomjones7383]

What do you eat? When I did it I lost weight quickly but quickly lost some muscle as well. Any tips?

[@BigElie]

I would fast until around 2pm and have 2 meals High in protein, good fats and complex carbs. Second meal around 6pm. This is now my lifestyle. Sometimes I do a 24hr - 48hr fast. Simple formula Hypertrophy training + calorie deficit

[@alventuradelacruz522]

food is great so...I will keep eating healthy but eating

[@FLAMEalan]

You probably didn’t gain much muscle, they were just revealed because you lost a lot of the fat from the calorie deficit.

[@Sinasi08]

The editing on your videos are absolutely 💯

[@everrettethompson9125]

What do you use to edit

[@eltipoboricua]

Thank you for this! So much helpfull information!! I will do my first 3-day fasting.

[@paulgrewal4339]

Bro dope video. Been fasting daily for 2 years now for ~ 14-20 hours. Recently have been hitting 22 hours and oddly, my white hairs in my beard seem to be disappearing and workouts are getting intense.

[@stephaniephouotrides2435]

Calorie restriction and/or fasting makes me feel so much better. Good vid

[@dotolaj3263]

I am the same. I feel much better when I’m fasting. Food feels heavy.

[@beastmode3600]

Have been doing OMAD for a couple months now started at 223,currently at 185. Fasting helping not just physically but mentally. I encourage people to encourage people too fast.

[@kevinp8108]

Are your one meals normal meals or do you cut out certain foods like bread, rice, and other starchy carbohydrates?

[@trevorcunningham4122]

​@@kevinp8108research the carnivore diet and OMAD. Dr. Berry on KZbin is excellent. I've been doing carnivore for 18 days and have lost 15 pounds. On day 14 my body naturally transitioned to OMAD after a 24 hour fast. I don't have to force it at all. It's natural. A lot of times I break my fast just because I feel like I should probably eat so I can begin my 24 hour fast again for the following day.

[@MySiamesedreams]

This was a really professionally executed video with notes that covered everything I’d hope to learn about. Thank you

[@user-qm7nw7vd5s]

OUTSTANDING presentation. 3 days is the sweet spot. I started with 2, really struggled to reach “almost” 3. Next time, a couple months later, I did 3 days easy. Experienced lots of benefits, from eliminating a persistent shoulder ache, to moderate weight loss (not an issue for me, but a nice additional benefit). About six months later, I did a 4 day fast, barely made it to that 4th day I think 3 days is good, every six months or so, as part of a healthy maintenance program that includes whole food vegan lifestyle, coffee no problem, occasional beer and wine. Mostly have spring water, with a squeeze of fresh lemon and apple cider vinegar as my beverage of choice with meals. 💪💪

[@OneLeggedTarantula]

if you can get to 3 you can do more. the first 3 days are the hardest, smooth sailing from there on out with the exception of day 7 and 14.

[@jnaur6849]

​@@OneLeggedTarantuladay 14? Why would you fast for such a length of time?

[@mysticflow467]

@@jnaur6849 fat loss

[@KaiPonte]

Great video putting together the benefits and results of fasting.

[@darren6202]

lol

[@mysticalrevolution]

Great video!! I especially like the carb info.

[@libralady0220]

Getting ready for another 21-day water fast. I started slow when I started fasting. I did 1 day, then 2 days, then 3 days until I was able to work my way up to 7 days. It's definitely hard that's why I started slow. The longest is 28 days. That was the best I've ever felt in my life! I'm preparing for a 21-day water fast, so here I go! Good luck on your journey! 🙏🏾😊💛

[@Sinner1660]

Edit: Typos By water fast... you mean only have water in a certain time window right within a day? Because otherwise it sounds like you're on a slow suicide mission. Are you okay?! 😅

[@iaminvincible4441]

@@Sinner1660 😂😂 I hope he survive this and tell his story of how no one should do this.

[@sorefinger4081]

​@@iaminvincible4441Google the name angus barbieri 😂

[@shampoochampion]

You should apply for the show Survivor

[@jamesmorris9816]

The longest I have fasted is 21 days and usually do a couple of 14 day fasts a year ( I drink a lot of water while fasting), I work out, eat healthy (I’m in Italy) but fasting is the healthiest thing I do, after 3 days it becomes easier and i definitely feel better. The hardest thing is not the fasting itself but being around people (as in the comments) telling you how bad it is for you and trying to guilt-trip you into eating. Luckily for me my wife is very supportive and doesn’t give me a hard time about it, especially as she can see first hand how much better I look and feel, I have learned to tell nobody else but her, in fact, I tell people the secret to fasting is keeping your mouth shut. I’m 72, on no medications and feel good. Ciao.

[@AGFuzzyPancake]

Such a well done video. Thank you so much for making this. I've heard these same benefits touted by dozens of other voices around the web that I respect as well. I fasted for 45 hours the other week for the first time, and it was a great experience for me. It seems like the verdict is out at this point that not-eating for a day or two is something everyone should do or at least consider. The only reason I can see for fasting not catching on is that nobody makes any money off of it with the exception of online health professionals/influencers; and the people that need fasting the most don't listen to them.

[@hulkhogan6259]

This is like a boot camp! thanks for the massive info in a short time! wow well done!

[@boblatkey7160]

I like to do it for a whole weekend. My last meal is Friday night and my next meal is Monday morning. I make sure that the kitchen is super clean on Friday night and then I enjoy the fact that my kitchen never gets dirty for the entire weekend!

[@heather5926]

Friday night then Monday night for full 3-day fast ❤

[@Matt-wt4ki]

Really great idea, must help with the motivation to not mess up the kitchen 👍

[@MrConartistdesign]

I'm on my 51st hours of fasting ! I love your video that breaks down the hours of fasting benefits your health. I will complete the 72 hours !! Keep making these great content.

[@christoph3187]

Amazing videos, thanks a ton mate! 👍🏻

[@tiberiusb3780]

Thanks for the information ! For those who are close to the 3rd day of fasting, play this video at 0.5 playback speed and you'll forget about hunger :)) Keep strong and you'll get stronger !!

[@bigjoe805]

Thank You. Awesome video 👍🏻 3 day fasting is like magic!

[@NoctKK]

This was an amazing video! thank you for your time and effort on this. I'm so glad you linked all research data as those are important as well. Just wanted to ask real quick, how often can someone do this? for example once per month? Twice? can someone respond to that? thank you

[@PullStartStables]

I’m 8.5 hours from my first 3 day fast. Thank you for the video explaining the things I’m experiencing! I am documenting my health changes on my channel too. I tried a 3 day beginning the evening of Thursday the 19th, and my wife asked me to eat on Saturday morning, the 21st, making it 38 hours with zero fasting experience. From the 21st to the 28th, I did a 16/8 or 17/7 intermittent fast, then on the 28th I began my 3 day. It is now the 31st of January and I have lost over 12 lbs. my goal is 16.1 lbs, or 100 Big Mac sandwiches!

[@nickmaxthechef]

What should i do since after 4 days of fasting i have a headache that is not going away

[@PullStartStables]

@@nickmaxthechef I haven’t gone more than 3 days. Have you had any intake other than water? Tea? Coffee? Electrolytes? I have learned that fasting means many things to many people.

[@ibrahimotaku69]

Did you regain your weight??

[@user-os5kj8xg2f]

When I was on my 48 hours fasting.. I felt, I had pooped lots of hamburgers, donuts 🍔🥯🤗🤗

[@PullStartStables]

@@LotusBornChild I was at 202.4 when I started fasting and intermittent fasting. Most mornings, I weigh in about 178-180 now. Last I calculated, I think that was 146 Big Macs? Either way, I’m feeling great!

[@cutepandabear2012]

Thank you for this video! ❤

[@user-xo2vg8sx3h]

Excellent breakdown. Really appreciate the notes in the comments too!

[@PracticeOfRighteousness]

Once I learn that foods can effect how you think and feel, I’ve been more conscious of what i eat and how much…Surprises me how many people still sit around and eat fast food knowing its not good for your body or your kids💯🤷🏾‍♂️🤔

[@Jacobeeez]

Because we only have one life to live. There are so many good fast foods out there! FYI many healthy people die early

[@PracticeOfRighteousness]

@@Jacobeeez Everything that’s considered “Good” don’t mean its good for you. We gotta get our impulses under control and start actually Thinking.

[@Jacobeeez]

@@PracticeOfRighteousness GOOD meaning it tastes delicious omg

[@G3RM3X617]

It tastes good. That's like asking smokers why they smoke. They know it's bad but dont care.

[@PracticeOfRighteousness]

@@G3RM3X617 the complete definition of complete foolishness..Gotta get those impulses under control.

[@SuicideMike5150]

I fasted for 12 days once. It was an amazing experiment. Somewhere between 3-6 days your body turns everything in your colon to liquid & yeah, it's an experience. After that there's not much to worry about. It cured me of cravings. Early on day 13 (thankfully a Saturday) I was walking my dogs at a leisurely pace and about half mile from home I just stopped and stood still. I completely ran out of "gas" and had to chill in place and just breathe until I had energy to continue on. I walked in the house and grabbed an apple. I wasn't feeling hungry but obviously my body sent the signal. Now I will go 16-24 hours no problem and usually eat one meal or within a limited window of time.

[@uno3863]

Awesome, I'm on a 10 day water fast, I'm on day 4, but I think I'll do 12 days since day 10 falls on a Wednesday of next week, so I'm thinking of completing the next week off and have my first refeed meal on Friday evening.

[@nawbruhawhellnaw]

@@uno3863how many weight you lose?

[@uno3863]

@@nawbruhawhellnaw about 14 lbs but it was mostly water weight

[@ccombos]

@@uno3863did you see any changes nd did u gain any back?!

[@andyboxish4436]

Sick video bro, love it!

[@Andos99]

I'm on hour 60 and shooting for another 24! This video was very well done and motivating.

[@tnh723]

This was a great pleasure to watch. Bravo! I just finished my first day. Wishing you well :-)

[@boraradicevic1911]

So? Did you complete the three-day (or more) fast? If yes, how did you feel?

[@robertmack899]

Excellent presentation, young man! I have done three-day fasts in the past and will begin one this evening! (Old dawg, 72)!

[@teresa978]

I needed this information - thank you

[@Leo-mr1qz]

I've learned that my sweet spot is about an 18-20 hour fast. Going beyond the 20 hours, I start to get "hangry," headaches, and irritable. Although, I do find refraining from food for that alloted time, about every other day helps me significantly. I don't get sick as often as my family members do, my clothes fit better, and my strength increases. Also, as a women in my late forties and experiencing peri-menapause, fasting has helped me manage the symptoms of this bodily change. Thank you for another great video! 😊 Happy Thanksgiving 🦃

[@MasterApprentist]

Try adding pottasium sodium and magnesium when fastin. Will stop the head aches

[@Leo-mr1qz]

@@MasterApprentist Thank you! Will do. 😊

[@SpamMouse]

Longer fasts are easier when you are keto adapted, you don't "suffer" the withdrawal of running on sugar/carbs. When you do get a hunger pang have a plan, I found a coffee at those times helpful. Also consider some salt in water to deal with headaches.

[@whoknows8223]

Agree. Sea salt/ electrolytes help. Just make sure the electrolytes have no kcal. There are special ones for fasting purposes. Or you break your fast and it becomes useless

[@whoknows8223]

@@SpamMouse black coffee has kcal though. Even if some sources tell it promotes autophagy, I would purely stick to water and sea salt only just to be safe.

[@ipswich85]

Great video. You actually managed to squeeze a book I recently read into 13 minutes of footage. The title is: Complete Guide To Fasting by Dr. Jason Fung. I highly recommend it.

[@davidbrown4271]

Fung is a nut case

[@sarahogunfadebo209]

Omg why?

[@jenh6247]

This book was recommended by my doctor. David, why do you say he’s a nut case?

[@josephbutler9238]

Awesome Video. I am In 72hrs of 96hrs. Was struggling this morn. But you gave me strength! Cheers.

[@punpck]

Solid summary, well done!

[@3912James]

I'm 3 hours away from completing Day 4 of my 1st ever 5 Day Fast. My mood is improved, little to NO body inflammation and the hunger withdrawals (2 hours past Day 3) became reduced.

[@proprietarycurez8463]

That's cool. Do you get that metal taste in your mouth and if so when does it start?

[@romahnae]

😧 Wow… hats 🎩 🧢 👒 off to you, buddy. First ever fast and you went for the 5 days. 🫡 First time i did it, i went for 2 days then the following week, 3. The first time i did the 5 day fast, it was strenuous, man. 👊🏾😁 Good job.

[@Hectorheroic]

So can I ask if you ate or drank anything during that time? I'm unsure about what exactly fasting is. Is any food allowed at all?

[@3912James]

@@Hectorheroic I ate nothing and drank nothing except water and electrolyte water....zero calories for 5 days. During a fast you don't eat anything or drink anything unless it contain zero calories.

[@3912James]

@@romahnae It's not something I plan to do often...but I'll give it another go around during Spring or Summer. In the meantime I'll stick with the 16 hour to 2 or 3 day fast...and YES....it was quite daunting. 😝 P.S.: I worked my way towards doing the 5 Day fast. My previous fast was 2 Days.

[@aaylasekura8252]

This video was amazing 😭 I just finished a 3 day water fast & gosh my appreciation for the human body 🤯 I am in awe

[@aliceannaq]

how many pounds did you lose??

[@user-nc9mn8ih3z]

​@@aliceannaqI'm curious too

[@user-nc9mn8ih3z]

Did u regain??

[@fluff6637]

Absolutely amazing, I've been doing ADF+OMAD+KETO, which I fast for 1 day, and only est during the next day but only with 1 hour window of eating with Keto diet. And I had a mouth ulcer, usually it takes 1-2 weeks for it to heal, but when doing this regime, the ulcer healed in mere 3 days, it was amazing i didn't need to suffer for weeks for it to heal!

[@crare8268]

An actual good video, good job man

[@anthonyepperson7868]

I fasted for 7 days after getting into keto (to make it easier). And my skin cleared up (eczema), the pain in my knees, hands, and back went away (inflammation), I was able to stretch much more than I was before and I was able to hold my breath underwater longer. It's crazy... I was 225ish before and I was 170ish at the end. That was within a month and 2 weeks (keto prep, intermittent fasting, into one meal a day fasting then skip a couple days. Then I did the 7 days... Almost 8.)

[@proprietarycurez8463]

Have you tried carnivore?

[@iroc341]

@@proprietarycurez8463 I have and its amazing. Very easy to eat 1meal a day ! Regularly go 16 to 20 hours most days on one meal of meat. 59 years old, and feeling the best I have ever felt !

[@ivanstefko2724]

I also have eczema :( u think it has to be that long?

[@suavekoleksy3778]

This is great stuff. Thank you for putting it in a very clear presentation. The only thing I wish you would touch on, is more about liquid intake, coffee, tea, sports or energy drinks. I'm on day 2 of 3 and only water at this point. Can I take something for the headache?

[@LukeSly91]

Your headache was likely due to dehydration caused by the elimination of electrolytes. I highly recommend supplementing with salt, potassium and a little magnesium while doing extended fasts.

[@hellboy8328]

Great information very well explained in good detail makes you appreciate the complex process of the human body truly amazing.

[@geobrizuela]

My new favorite video! Thanks!!

[@alessiobufano2813]

The longer fasting period I’ve done has been of 60 hours for 2 times, the last was one week ago to “clean a bit my body” in the middle of my bulking phase (at 3600 kcals per day, I’m a well trained person of 73 kg and 177cm) and both times I feel very good and with no hunger (a part from the little span between the 12 and the 14 hours after I started). In the past I’ve tried fasting for 24 or 48 hours and I have had the same sensations of no hungry a part from that little span between the 12 and the 14 hours, and also I have done during my definition phase the intermittent fasting 16-8 for 4 months from April to July without any problems. I really recommend intermittent fasting to everyone who wants to lose weight easier, especially considering all the benefits this method has on our body!

[@28jd]

go for 200 hours

[@proprietarycurez8463]

It's easier to eat nothing than omad. ✌

[@david.leikam]

Been daytime fasting for Advent this season (7 weeks). 🙏

[@sherellholleywood878]

I ❤ this it’s so scientifically detailed!!

[@omobolamodupe4190]

I love this video, so informative.

[@davidsilva487]

Great information I fast every other week for 18 hours and recently started working out so this helps lots. Thank you 🙏🏼

[@28jd]

do 180 hours ive done 1000hrs

[@staceykersting705]

I fast at least 18 hrs every day. Once a week, I do 24-36. 4-5x, I did 72 hrs ( in the last 2 years).

[@tiptopflipflop7991]

When I was 230lbs (6ft 2in) I fasted for 4 months (6 days a week, broke my fast, and repeated for 3 more weeks). Lost over 30 pounds of fat/water/inflammation and bloodwork looked amazing. If you're asking me, people who are even 10 pounds overweight can benefit from extended fasts.

[@Whithorn]

Really helped mate thank you I’d suggest this video to anybody’s 👍🏽

[@theos6929]

I feel like watching these videos while you fast helps keep focused on the goals and benefits. Plus your learning as its happening to you.

[@gregcrane4953]

I do a 48 hour fast per week along with a badtardized keto diet and carb deficit. Have done a couple of 72 hour fasts. The hardest part is getting through the first day, after that, it becomes much easier. It's all part of training. Great video!

[@devintompkins9626]

Electrolyes help me when i get hungry,

[@nomercy415]

Is that with strength training? Or just regular day to day activities? Looking to do strength training and fast.

[@gregcrane4953]

@@nomercy415 weightlifting and cardio (rowing and stepper) as well.

[@nomercy415]

@@gregcrane4953 Thanks, sounds tough, but I will try it anyway 😉 💪🏾

[@gregcrane4953]

@@nomercy415 you can do it. Set goals and be realistic. You might well surpass your goals. You got this.

[@Godinez3rd]

Great information and presented concisely. Thank you!

[@roblouw3038]

if you think this is great info about fasting then you are sadly mistaken - the info about the first 3 days has some truth and some accuracy but the stuff about prolonged fasting is pure garbage and lies actually - look up Loren Lockman on KZbin to learn about proper fasting...

[@Godinez3rd]

@@roblouw3038 not interested. I'm really interested in the 3-day fast and how I regenerates the immune system. The rolling Stone magazine did a really good article about this as well. Best of luck with your search for knowledge.

[@roblouw3038]

@@Godinez3rd Wow - so you think a 3 day fast "regenerates" the so called immune system - another example of ignorance about fasting - best of luck to you as well in your search for knowledge especially as you "study" from publications like the "Rolling Stones" - the mind boggles...

[@Godinez3rd]

@@roblouw3038 You're toxic. Best of luck to anyone that endures your existence.

[@carlosmazo6632]

Very well explained 👏 thank you. So much inaccurate information out there. ❤

[@rshoe1023]

My 33 year old son just finished a 5 day fast. This has given me some inspiration to try at least a 1 or 2 day fast to start out. Also I've been diagnosed with non alcoholic fatty liver, and was wondering if fasting would be beneficial in reversing this condition. It seems as though it would. Great vid very informative! The human body is utterly amazing!

[@kieranegonu]

It will. Repeat the fasting again too

[@traviseell]

All of this is correct and i decided to push myself to completing a 98hr fast and i did , i was done 15lbs and i felt great , i was already in ketosis so that wasn’t the problem but i will say i was more annoyed than ever , every small thing got on my nerves lol but once it was done i went back to my 36hr fast then slowly went back to my 16.8 i enjoy fasting it clears my mind for sure

[@ccombos]

did you see any changes?!

[@MichaelHootenFamilyTravel]

So I’m curious how much time should I leave between fasting sessions? What’s healthy? I should inform you I am an “Over The Road” Trucker and am currently out now. I’ve always watched your videos and have begun watching what I eat more and doing light workouts + walks around the truck stops a few times a week. I’m over weight for sure 5’ 10” 235 used to be 190 and 5% body fat prior to trucking. With a 72-hour fast only water, lemon juice?, black coffee and tea once completed how many days do I need in between fasts? Am I safe doing 2-3 days on 1 day eating then again? Lmk and thank you for the great content!

[@ajlesavior7086]

Yup. Watching these really do help you stay on track 😭

[@monnoo8221]

that video was six-packed with useful information!!

[@BTCLP]

Can you make a video on best vitamins to take while on a fast ?

[@bettyboossister3918]

Look up Dr Berg

[@BryanAnjSimon]

I have just completed a 72 hour fast, it got really hard after 60 hours and I was not able to think properly while working. It felt like having constant confusion when i reached the 60-72 hours of fasting. Some videos said not to eat too much after completing the fast so I ended my fast by eating a little. I ended my fast exactly at the 72 hour mark but light headedness and confusion lasted until the end of the fourth day. After the fast, i feel great. I feel a dramatic decrease in anxiety and depression. I lost so much weight and my skin and face looks healthier and younger. I also feel a lot more energy and don’t have as many urges to eat throughout the day.

[@Rsinha702]

It was just water fasting or you took electrolytes or sea salt or any minerals? I have completed 48 hours of the 72 hours fasting. I don’t have any energy and have constant hunger pangs and headache

[@dr.chrisketo7193]

Absolutely the best summary! Just enjoying headache after 60 hours 😅Coffee & mineral water helps!

[@user-gw6xu6cq1n]

I already started thanks for the info ❤

[@ak_sd5747]

I would love to see you trying to fast Ramadan and then make a video about it and all.

[@mlmj1994]

I try to do an Esther Fast once a month. It’s cool to see what the body does during that time. I tend to get headaches, tiredness, and sometimes my legs get really sore.

[@gubbins1933]

Cheers, thank you for that.

[@Anthony-nw7xp]

Best video on ⏩ ng on the internet!! Well done Max!

[@dustinclark3390]

I ve done a lot of fasts. I was an obese child and made myself drop the weight as a teen, since then I am always trying to maintain balance with forty pounds. I was ninety once and it was to light for my health, it's almost as bad as being obese.

[@rockybalboa1814]

Started my 3 day fasting at 9 am this morning. Will keep yall updated.

[@rockybalboa1814]

6 hours down! Lets go

[@raymondosullivan1958]

And how did it work out

[@wamm3770]

Did it do any good for u?

[@tracyeaves4847]

I fast fast for 18 hours on most days and feel fine.