How Your Muscles Change With Exercise

[@theanatomylab]

Answer to the quiz question. The 3 different types of muscle tissue are: Cardiac (striated cardiac) Smooth (non-striated) Skeletal (striated skeletal)

[@s0uls4nd]

nice

[@baileydombroskie3046]

I have a question related to the topic of the 2 muscle fibres and how they act, but I feel I must briefly describe wat I do for a living to explain my question. I work at a lumber mill in Ontario Canada. I work in the large planer as (primarily) a piler. Wat a piler does is pile lumber into lifts. In a planer, lumber will be brought in to be dressed down and/or graded out and the lumber that is being ordered is to be piled into the requested lifts. Most of my piling is done off a set of 5 chains that r best described as each being a pair of hockey skate blades for each link. This does cause a lot more friction when piling lumber then the chains found in other work areas that have a metal plate in top of them. In the planer I work in 90% of wat we do is red and white pine. The range of size of lumber we process in my planer is from 1X2X6 to 12X12X24. Luckily the largest lumber I’ve ever had the pleasure of piling sence I started 3 years ago was 10X10X16 red pine that was soaken wet and had 2” of ice. I’ve estimated each of those timbers weight 600-700lbs each. So now onto the question: Both me and my relatives as well as all of my experienced coworkers believe that “u r useless if u can’t do both pile heavy lumber and do it consistently all day long. We don’t care how much u can lift if it means u r exhausted for the rest of the day after merely 10 mins of work. We don’t care how fast or how energetic u r if u can’t pile heavy lumber.”. I am able to pile some quite heavy ass lumber like it’s nothing and do it all day non stop. So How do I know wat kind of muscle fibres I have and a guesstimate of wat ratio of slow:fast twitch muscle fibres I got in my arms? And also how is it that I find working out in a gym (which I did for 1 semester in highschool) fucking useless and actually detrimental and a waste of time? After I did that 1 semester of fitness class I’ve been weaker and less fit ever sence. I started to feel and become weaker imo after 2 months of it. Ever sence then I’ve been slower and have had less stamina than I did in my teen years. Btw I’m 21yo, 5’10”, and weight 175lbs. And I’d guess my legs have about twice the amount of muscle as my arms do. I’m pretty “normal” looking in size. Not much bigger than the guy in the vid. I hope some1 reads this and can answer my questions.

[@TurboPancake]

porter taught me this...

[@danielschultz6470]

@@baileydombroskie3046 if you workout consistently, eat properly, and sleep enough you will get stronger. thats just a simple fact, but it takes a lot of time and commitment. if you have more fast twitch muscle fibers it doesnt mean you cant gain slow twitch, if you want to just do good at ur job then simply doing ur job consistently will make you better. but if you want to gain muscle or gain endurance just go for it and do it. your job performance has to do with lots of things, your skill, technique, experience, will, strength cardio vascular endurance and much more, so dont be too focused on your job performance to judge your workout abilities. and i doubt there is a correlation between you working out and the decrease in strength, working out isnt magic, but you have to do it right, and you cannot simply expect to workout a lil, not know what you are doing and become larry wheels

[@baileydombroskie3046]

@@danielschultz6470 I c. When I did fitness class in highschool for that 1 semester I found after like 2 weeks of doing only the weight related exercises not only was I getting needlessly weaker by 30% over that time I also found my muscles that I worked in a day to be useless or unreasonably tired and hurting for about 1-2 days afterwards of which I had never experienced b4 or after and caused me to be unable to help my dad at his farm. So after those 2 weeks I decided to do cardio on the bike, olyptical (I think that’s wat it was called), and the treadmill and only do 1 day every 4 weeks of the weight related exercises in 1 class. When me and my friend who both took the same fitness class wud do the cardio together we wud bring in our school chrome books and my iPad and his tablet and talk and play games together while we casually did cardio. According to the machines I was burning on average of 350 cals on the bikes, 500 cals on the Olympical, and 900 cals on the treadmill. My record in 1 hour of cardio was done on the treadmill which was 1,100 cals. And I wasn’t even trying THAT hard compared to if I did as best I cud. And I still did that session while talking and playing games with my friend. B4 i decided to mostly focus on cardio my max weight I cud leg press was 325lbs and at 12 reps. At 300lbs for 22 reps. When it was nearing exams, so 4-4.5 months later I tried the leg press 1 last time in front of the teacher and 2 other students to show any and all of my progress over that time. My max weight was now 375lbs and with that weight I was able to very casually do over 100 reps and the only reason I stopped around 102 was bcuz I frankly was getting bored and my teacher and fellow students were all (15++ students btw) watching in awe and shock and no1 cud understand wtf I just did in front of them. After I stopped my teacher walked away saying “bailey, idk wat the fuck u just did and how it even happened but my god I got no answer.” This is a paraphrase btw, my memory is not good enuf to remember his exact words. According to all the research material I cud find online as well as wat the teacher knew, it was said to be impossible to manage more then 8 reps at max weight, 12 reps at 75% weight, and 20 reps at 60% weight. I shud also mention that I’ve been working sence I was 3yo. It started out as just simply raking the hay up behind the bailer with my grandma as my dad was bailing. But as time went on I helped out more, more, and more. By 8yo I was around 70-80lbs and was carrying cedar posts in the bush up hills to the fence line with my dad. Those posts weighted anywhere from 40-100lbs each, at least the 1s I cud carry not drag. And last year out of curiosity and feeling like it I found that when I was carrying pails of water from the well to the the barn where the bull was locked up to water him, I realized that the approximately 60lbs per pail of water (include the steel pail) was no match for the power each of my fingers possess. I casually showed off to my dad’s female friend how I cud carrying 2 pails of water that 100’ ish while only using my pinkie fingers and only holding the pails with just the last joint of the fingers. I am able to do it with all my fingers like this with no difficulty at all. But I’m not concerned about my performance at work as no1 can keep up to me and no1 can do as good of a job as me simultaneously. I was simply wondering wat kinds of muscle fibres I likely have and how much is the estimated ratio between the 2. Bcuz I can work for 3 hours nonstop at full speed does that mean my muscles r primarily fast twitch? It’s just confusing when I apply this knowledge to myself bcuz 99% of wat I can do I can do for a long time and there is no weakness of not being able to do 100% for a long time like the idea of fast twitch fibres suggests. It’s like my muscles r choosing to have the benefits of both muscle fibres without the downsides of either.

[@phoenixflamegames1]

As a non-native english speaker, these videos are extremely informative and teach me a lot of specific words. Thank you for all the knowledge!

[@theanatomylab]

Thank you for watching!

[@helioalmeida8217]

It's actually interesting how no matter what difficult words he uses, we still got it.

[@samuelhebert9944]

Agreed

[@Dre1Way]

"Do u know how to holler?" - German Accent

[@Getwelllivehealthy]

I was diagnosed in 2019 with MS and it would be interesting if you could make a video what actually happens in the brain and spine when you have that. If that’s possible. Just a recommendation. Otherwise I am enjoying the videos and I find them very informative to the point and easy to understand.

[@karlbodmer4368]

Exercising can be hard sometimes but It always makes me feel better. Last year I had almost 300 lbs in body weight. And then one day I just started moving more, then running slowly and at the last I started doing weighted exercises and I was eating clean by following meal plan I got from Next Level Diet. Today I have 200 lbs and I am happy like I never been in my life.

[@93metalgtr]

That is awesome dude! Keep up the great work! 💪🏼

[@user-go2xi7zq5q]

Congrats man👏🏾👏🏾

[@ThePJExperience]

Bud are you sure talking about excercise/working out ? Not anabolic steroids ?

[@erikvanderveken1408]

fair play man, way to go!

[@jesuslovesyou7130]

@@ukimenustah26 you have because a lot people have this story

[@luisaguilar5648]

I found this channel a few days ago. As a paramedic, firefighter, and bodybuilder, I have to say, this is one of the best and most entertaining educational channels on youtube. Keep the videos coming! This is all great information and yall break it down simply enough for anyone to understand. Thank yall for educating and entertaining.

[@shinythings2017]

Thank you for your service!

[@gsekharbabu72]

Thanks

[@Fightanddie]

Dang

[@Dimushroomitri]

​@@Fightanddie thats worth 10$ in the U.S.A., not as much as it looks

[@theanatomylab]

No problem!!

[@lorrainefrost6285]

45 yrs ago in college they were telling students that we only had theories about how muscle actually moved! I thought it very disturbing we had an advanced knowledge of space science, fir example, and still were trying to discover our own bodies. It was then I realized physiology was the “ last frontier “ and that cemented my goal of brain research. Thank you for educating.

[@chanceroberts7494]

Very interesting. Thank you for sharing

[@noctilucera7585]

Well, it is 2022 and we still hardly know how nutrition and many things work, there are so many "specialists" and papers and studies and they all contradict each other. In a topic thats as simple as "eating". You are right it is mind boggling

[@oksanakaido8437]

@@noctilucera7585 we sort of know how the parts work in relation to nutrition, but the whole is more than the sum of its parts. each human body is its own environment with so many variables, it's difficult to draw a conclusion that will apply to all/most people

[@Mikej1592]

lol i know right, we know more about the bottom of the Mariana trench and Alpha Centaury then we do our own physiology, 45 years ago they were just starting to figure out the human body still. Students were probably thinking, oh were learning so much about the human body, i bet we know a ton about the brain by now. instructors react like, ohhh shit.. yeah, uhhh, no one knows how that shit works. moving on. 45 years later we are barely scratching the surface as to how the brain works. We now know more about the entire function of our DNA and they have the entire thing mapped out (I believe I read somewhere) but we still have no idea what causes Alzheimer's, seizures, ADHD, autism, depression, chemical imbalances, insomnia, memory loss, selective memory loss, traumatic memory loss other than a few million hypothesis' the thing that is figuring out the universe has no idea how itself works. We are literally meat ships that our brains are navigating the universe trying to figure itself out.

[@crismorgan6756]

I absolutely agree with you. In fact , nowadays we still having different theories about muscle growth and training methods. I've been working out for the last 10 years and I've seen everything, people training hard, people training not as heavy but in the end, everyone had good results. I think that we still ignoring a lot of things about human body.

[@b1uezer]

It would be great to see a comparison on how the body heals and improves muscle from exercise vs injury.

[@shanB913]

Excellent suggestion! I’d love to learn about that, as well 👍🏻

[@nickgrove3648]

Just in case the original comment is edited at any point, I am responding to this: "It would be great to see a comparison on how the body heals and improves muscle from exercise vs injury." . The "stress/recovery/adaptation" model is outdated and biologically inaccurate. The leading theory of adaptation currently accepted by experts in athletic training is the "fitness-fatigue" or "two factor" model. Adaptation does not occur as a response to damage done to the body (though evolutionary theorists may speculate that damage control is the reason adaptation mechanisms exist in the first place). Rather, adaptation response occurs independently of any damage or fatigue accumulated during the process. Correspondingly, fitness (the body's theoretical performance potential if fatigue were absent) is generally highest shortly after training (how long after sun exposure do you have to wait for your skin to darken?). Unfortunately, fatigue is also at its highest immediately following training, so the net effect is generally that overall preparedness (the amount of weight you are actually capable of lifting, how fast you are actually able to run, etc.) tends to be lower post-workout than it was pre-workout, at least after large-load workouts. . The adaptation model in which exercise causes "damage" to the body, with subsequent stages of "recovery" then "supercompensation", is incorrect. Any fatigue accumulated from training is coincidental to adaptation, and in my opinion, should be minimized (through proper training organization: quit training to or near failure unless you are a competitive bodybuilder looking to swell your muscles with fluid). For more information, I recommend "Science and Practice of Strength Training" by Zatsiorsky and Kraemer, as well as Pavel Tsatsouline's KZbin channel and his numerous articles discussing the ill effects of training to failure. . I believe your question to be loaded (though that was not your intention), as damage to muscle tissue was never the cause of muscular adaptation in the first place.

[@b1uezer]

@@nickgrove3648 Even if muscle damage isn't the trigger for adaptation, and adaptation occurs directly after stimulus, muscle damage is still a part of the process. The two factor model even notes that muscle damage is likely a large part of the fatigue we feel as peripheral and central fatigue are mostly transient after a workout. The body does still have to repair damaged muscle, regardless of when the strength adaptation occurs, and that's what I'm interested in.

[@_uchiha]

that would be amazing

[@thomasbrooksjr380]

@@b1uezer so no matter what we damage muscles just by moving them ? They are that easy to damage?

[@Vixenventures]

In the age of sedentary life and now health awareness, it would be AMAZING if you could do a video covering what happens to the muscles when a person has lived a sedentary life for many years and then begins actively exercising daily. I used to have a good deal of muscle for a woman that didn't exercise but had an active job, then lost what feels like all of it after taking a desk job. I'm now beginning to exercise more and it feels impossible! Lol What's happening there?

[@theanatomylab]

Well... there are multiple factors that contribute to this, but one is age... I don't know how old you are, but as we get older it becomes harder and harder to get back what we've lost, especially if we have an extended period of inactivity. It is much easier to "maintain" with consistent exercise than it is to get into a "lose/regain" cycle.

[@Vixenventures]

@@theanatomylab Hi! Thank you so much for responding! I'm 33 and took a desk job at 24. I've lost 80lbs slowly over the last few years and noticed my base frame seems much more petite than it used to be, so I've been worried that maybe I'm weaker now? Lol. I don't feel weaker, but I thought maybe here could be a good place to talk about the science behind it. I'm okay with having a smaller frame in the end if it's what nature just has in store, as long as my body's healthy. ☺

[@AgentP82]

@@theanatomylab i second this suggestion. Took a desk job at 19 and i'm 39 now. Im sure theres some level of atrophy that is beyond the norm. I know i can feel it. id be curious to know the science.

[@spoonypoon7998]

@@theanatomylab boy that gives a lot of hope to older people trying to change lol

[@wombat5252]

@@Vixenventures It's really your age. Think of your age and alcohol...Can you still handle a hangover as well as you could when you were 21? Lol age affects everything!

[@tridevgundlapalli4234]

I watch your videos daily i don't care if it is an old video or a new video coz you guys are providing the right knowledge

[@TIG2MAN0]

These are the best videos on the internet. High school kids should have a class just watching these. The body is the vehicle that carries us through life, its important to know how it works.

[@thefriendlyteenager726]

Not sure how all the kids are going to feel watching him use human remains for example though

[@madisonng9701]

I’m taking an anatomy class and Intro to weightlifting class this semester, and it’s so cool to see the two classes overlap! Thanks for all you do! I’m loving my Anat class and hoping to finish strong!

[@theanatomylab]

That's awesome! Good luck with your classes!

[@netherwolves3412]

I see what you did there… finish strong

[@vikingthedude]

Sounds like a great combo

[@j.richards2346]

Congrats! Opening the door to a gym , exercise , running, Gong Fu , Tai Ji Quan were/are my best path choices in life. I ask gym newbies , "So , what's the plan"? 🏋🏼 "I wanna get big within a year". I tell 'em , "A whole year! Did U think about the next 50 years"? 👍

[@frankfromupstateny3796]

This will change the whole course of your life...truly. Cheers. Ask alot of questions,...especially about electrolytes, about the mechanism of muscle contraction...and "really understand" this for the teaching of others later on. Awesome material. Wish I could go back to my college years and keep studying anatomy....ohhh well....can't do it all in this short life.

[@xavibbi3160]

I'm currently going through depression, it hit me out of nowhere after 3 months of dieting and exercising. Almost got more than half of the weight I lost back due to over eating. Being here and being able to understand how muscles work, the science behind it, makes me focus on my goal and keep me in the right path. Thank you for taking the time to create these videos, they're helping me a lot while teaching me at the same time. Thank you.

[@wchristian2000]

Keep moving forward!

[@jodybogdanovich4333]

Hang in there and if you haven't already, I hope you get help for your depression (counseling and possibly meds). I have been living with chronic depression and anxiety for years . . .

[@elsac4405]

I had depression & gained about 20 lbs. I dont remember eating much, I thought I slept most of the time. Im not sure how long it lasted either but I snapped myself out of it, no meds...F that!

[@fallenangel2155]

its trauma coming to the surface to be healed. Don't stop, keep going and it will clear out. Its going to keep coming in waves until it will be cleared out completely. It would be helpful if you practice a little pranayama (breathing exercise) everyday too to help you heal faster.

[@jodybogdanovich4333]

@@elsac4405 with all due respect, chronic depression can be due to a chemical imbalance in the brain and, like many mental illnesses, needs pharmaceuticals to properly treat. Please be respectful of those of us dealing with chronic clinical depression, not the temporary situational short-lived depression you apparently experienced.

[@amundeep1]

The two other types of muscle tissue are smooth muscle (lines the walls of the intestines) and cardiac muscle (special muscle tissue that contracts periodically in the heart). Enjoy the learning!

[@tmadden4951]

Thanks for the reminder

[@ehlowgovna]

Nice

[@jhonrambo3982]

Thanks you clever fecker 👍I knew smooth ones that move Involuntary and skeletal one we can move on command dudent know about heart muscles do now 💪

[@toekneelee8455]

Atleast someone bothered to tell us the answer 🙏

[@BlurryHoplite1444]

Didn't get pinned😓

[@AverageGabriel]

I love this channel! I've been using it to further my knowledge of the body as a mixed martial artist aiming to become an instructor. Knowledge of the entire body and how it works is an overlooked holy grail as an espiring combat teacher.

[@Fitness4London]

Awesome tutorial! That's why a sprint finish at the end of a 5K run feels like a relief and quiet easy, because you're recruiting fresh fast-twitch (type 2) muscle fibres for the first time in that 5K run.

[@vk4289]

The 3 types of muscles are skeletal muscles (voluntary muscles), smooth muscles (involuntary muscles) and cardiac muscles (muscles of the heart)

[@MrCmon113]

Does the asshole closer muscle attach to the skeleton?

[@marcosalazar4682]

google ftw

[@vk4289]

@@marcosalazar4682 I learnt in grade 10

[@marcosalazar4682]

@@vk4289 sure

[@vk4289]

@@marcosalazar4682 Sorry I guess it’s grade 9

[@dalegilman4116]

As a person who is wheelchair bound, I have both hypertrophic and atrified (??) muscle tissue. An explanation of atrophy would be a nice conclusion to this topic of muscle adaption.

[@Videot78]

These videos have gotten me more interested than ever in human anatomy. I’d love to hear the challenges of working in this job and the buildup to having it.

[@KayFlowidity]

4:40 Slow twitch 💪 7:25🙌 8:45 Fast twitch 💪 11:40 Motor Units 13:15 Hypertrophy 💪🙌

[@Spartanwarlord]

My man ty

[@lakeishacomeau]

Thank you

[@xristinas2767]

I would love to watch a video about how the heart and lungs are affected from exercise. I run this morning and then i was walking to my work uphill as always. But this time my lungs were like they could hold more air in them. Its was awesome! And i noticed it randomly today lol

[@EtsukoAmi]

they already have a vid about the heart and exercise :)

[@xristinas2767]

@@EtsukoAmi yes! I saw that the next day i posted this comment:P i saw the thumbnail and i remembered Thanks for the answer tho i appreciate it!

[@frankfromupstateny3796]

Learn what NOx/ Nitric Oxide is....what it does,...why it does it...and how to increase it's presence...along with what the basic mitochondria is/are in the human mammal if you don't already. Learn the "changes that take place with cardiac oxygen uptake exercises over time too." What happens to the hearts capacities, endurance, physiological changes, etal.

[@quandilustenbinguslorsodo1501]

Whoever believes in the Lord Jesus Christ shall not perish but have everlasting life he is returning accept Jesus as your Lord and Savior and you shall be saved repentzbzbbz

[@SuperFlameGuy60]

@@quandilustenbinguslorsodo1501 Amen. Glad to see a brother in Christ preaching the gospel!

[@CCB249]

That was the best talk I have heard on fast twitch and slow twitch muscles. Thank you! Keep them coming.

[@theanatomylab]

Thank you! Will do!

[@ronlanter6906]

I'm 61 and have been moderately active outside of work which formerly was in an office environment. I have spent the last 3 years trail jogging and this last 12 months been using the 80/20 running program. I am at my peak endurance and cardio strength and am now up to 70 hilly trail miles per month. It's my greatest enjoyment because it makes everything else I do that much more enjoyable.

[@dhairyapareek]

Answer:- The other 2 are *'Smooth(spindle shaped)'* and *'Cardiac(branched and striated)'* muscles, they are *'involuntary'* muscles. While *'skeletal(striated and multi-nucleated)'* are *'voluntary muscles.'* Heart is made up of cardiac muscles and Human Heart is *'Myogenic'.*

[@dhairyapareek]

@Aman Jha First Drop; Obsessed with NEET. You know what it means!!

[@factkhazana3112]

Is it your second drop now or got into aiims

[@elcas20012003]

i like watching your vids as an easy soothing and refreshing disctraction between patients

[@farhanfatoni698]

I always use this video as a guide after my work in the office. This video helps a lot!

[@vk4289]

Video request : How do proteins help in development of muscles and growth of the body?

[@Petri_Pennala]

And creatine too

[@xMw3PUSx]

thats biochemistry rather than anatomy

[@hirohiro5034]

@@xMw3PUSx based

[@DantesInferno96]

Muscle fibres contain certain proteins like actin and myosin which help in contraction of muscles.

[@braxtonwilliams2262]

As a Senior in Ex PHYS, this video was incredible. It explains the heart of our muscle physiology in a short and simple way. Really enjoyed it!

[@DOGB14]

This channel was always amazing, but I feel like you gets are getting better and better! Thank you for sharing with us.

[@mastertotalhealthwithmarcc5704]

This is the exact science we as trainers try to explain to our clients! You guys do a great job of making it clear plan and simple. Keep up the great work.

[@Dennisdpr12]

i highly recommend taking anatomy and physiology class. You will learn a lot. I am currently studying to become a nurse but exercise and the physiology of what happens inside the body is amazing.

[@jodyromig9573]

You my friend are brilliant! I love watching all of your videos and have learned a LOT! Keep em' coming (nope...not a student, just trying to finally learn how this ol' body functions and keep it in great working order.

[@globalpitchexplorer]

I absolutely LOVE your videos!! Whenever I need a refresher as someone in the medical field, I turn to this channel! Keep up the good work!

[@RestlessBroccoli]

I wasn't able to exercise during the pandemic. 2 years went by and now when I go to the gym I realize that muscles are really amazing and what I was missing out in the past two years. Never missing workouts again.

[@francorodriguez8252]

Coulda hit some home work outs son

[@ronlanter6906]

I ramped my exercise up big time when covid began. I trail jog and the trails are always open and usually free.

[@nassssss]

Those newbie gains are satisfying to see and makes you never want to go back to not lifting haha

[@RestlessBroccoli]

@@nassssss so true

[@j.richards2346]

Beginning of Plandemic , I thought that I'd be living in the hole in the wall , mile away , rural , gym . All was good then it was flooded with college kids , "No , no thank you"🦠 I only went in when they weren't there or late nite . 61 y.o.

[@kasimirb5155]

The other two muscle types are heart muscle and smooth muscle (digestive tract, blood vessels etc.). Anyway, it would interesting to compare muscles of marathon runners, bodybuilders and crossfitters in regard of their muscle types and sizes. Are there any studies yet?

[@Hellhounds_and_barbells]

Powerlifters also, this would definitely be interesting 🤔

[@hamasaki000]

this would be cool indeed! I'd like to see professional dancer's muscles as well.

[@juliemanarin4127]

Yes smooth and cardiac

[@franciscoramirez789]

Definitely powerlifters, crossfit will likely be the same as a bodybuilder, only smaller

[@RaymondRAYCE]

Crossfitters will have more damage than health... lol

[@tamerbeksan9071]

Teşekkürler.

[@theanatomylab]

Thanks!

[@BrightEyes8513]

This channel is absolutely amazing. A huge thank you to you and your team that bring us all this knowledge. Much appreciation 🙏

[@knowhere2bfound825]

It's really awesome to know the science behind exercising 🤯. A breakdown of the effects of different types of training throughout each phase of the menstrual cycle would be amazing 🔥

[@dustencross357]

😂

[@sellhomes]

Thanks Jonathan for yet another wonderful video of muscles and ATP process!! Your hardwork has been appreciated always and I thank the Institute of Anatomy as well to make these videos so fascinating and informative.

[@joshwillis2879]

As a Fitness Student! This is really helpful! I learned during my weight training that the strongest muscles in the body are the Glutes. Love the videos Jonathan (he's my fave)! Keep it up 👍🏻

[@Adriana.Gabriela]

Largest? Are you sure they didn't mean the strongest instead of largest?

[@joshwillis2879]

@@Adriana.Gabriela you're right, I just corrected it.

[@derickfigueroa8526]

it also is the largest though, and as for the strength it depends on how you define strength

[@AndrewTheTransformer]

In my view, the lats are the largest muscle although some people may argue that glutes are largest. The glute muscle is definitely by far the strongest.

[@oliguayasebesteves166]

@@AndrewTheTransformer Sorry pal, but the strongest muscles are the muscles of the jaws (proven fact)

[@lanreseeds]

From Nigeria. And it’s been awesome going through your videos. Keep it up

[@k2world85]

Another wonderful class for me. As I had said before you are my morning sturdy ritual and never get boring, I am so thankful that what a fascinating body we have ! keep coming! Thank you Jonathan 😊 👏👏👏

[@katielarson8498]

So well explained, thank you! Currently studying to pass the MBLEx and this touched on many points and was an amazing study tool.

[@Dalewt75]

I'd love to see a video explaining what the body goes through after a 20 minute session on a treadmill. Just to see how the lungs, heart and muscles are affected by the workout both long term and short term.

[@kandacelynn07]

Was so excited to see this! I love these videos so much! So educational!

[@degecko]

I wasn't able to focus to more than 75% of the video, because I'm not really interested in anatomy so much, but I still somehow enjoy your videos. Sometimes the KZbin algo delivers something which is not my cup of tea, but it's well made, so I'm intrigued. Not sure what I'm trying to say, but kudos, I'll keep watching your videos.

[@andreyllosa9106]

Not gonna lie at first I was kind of thinking into ditching the video 10 seconds in but as it went on you really catched my attention so very interesting and informative this will definitely help more in my training and I thank you for the additional knowledge you provided to us people of the internet! I've subscribed to your channel and liked the video cheers brother!

[@wischi4985]

Skeletal muscles - Attached to the skeleton, enables skeleton movement controlled by our mind. Smooth muscles - Are autonomous muscles, so not controllable by ourselves. Those are found for example in the stomache, intestine and blood vessels. Cardiac muscles - Are built similarily to the skeletal muscles, but are also autonomous and do not fatigue, unlike skeletal muscle (that would obviously kill us).

[@williammark1762]

It would be great if you could discuss the effects of aging on the muscles. I’ve always been very athletic, but now that I’m 61, I notice very dramatic changes. I still swim 100 laps twice a week, lift weights for an hour twice a week and do an hour of intense cardio twice a week (gerbil mill). But I continue to lose strength and muscle mass.

[@klenchr3621]

As I've gotten older myself I notice that my muscle strength is still pretty solid, BUT I have to focus on explosive steady reps of 10 vs light weight with many reps. Cant control father time, but this change has helped. So yes, way way stronger than I was in my 30s but no I can't play 4 quarters of basketball at full speed. Old.man strength is real at expense of speed and endurance.

[@ChrisClark_808]

That’s due to your natural drop in testosterone.

[@greghawkins3985]

as Chris Clark says, the natural decrease in testosterone is no doubt a factor, but so also is protein intake. Google a few references on requirements for seniors/elderly. Older folks especially men (>70yrs in the studies if I recall) need a dietary protein intake almost what a younger man doing strength and even mild hypertrophy training would need just to keep up with the increased muscle breakdown of age - ie closer to 0.8 to 1g per kg just to maintain. I'm not sure if the mechanism is decreased anabolism from reduced testosterone or a true increase in catabolism

[@ChrisClark_808]

@@greghawkins3985 well said Mr. Hawkins

[@TheCastedone]

I'm half your age and can maybe do ten laps 😅

[@skylarmassey3094]

Love the content!! Very helpful and interesting👍🏽

[@theanatomylab]

Thank you for watching!

[@alexplus3]

Thank you for your time and help ✌️💥

[@zachsfitness7621]

Cardiac muscles and smooth muscles :) I loved this video! Great Job!!

[@sidharthsaraswat]

The three types of muscles : Skeletal (striated) - voluntary Visceral / smooth (non striated) - involuntary Cardiac (heart)

[@kyokajiro1808]

this should be pinnedd

[@devamithrakh3725]

NCERT right?👍

[@sidharthsaraswat]

@@devamithrakh3725 ✌🏻

[@SeasonalXtech]

@@sidharthsaraswat ohk

[@frankfromupstateny3796]

Awesome.....I wish learning the Krebs Cycle was this "straight forward huh?!!" Cool.

[@Mikej1592]

I am not even studying anatomy but I find these absolutely fascinating. Thank you and your team for creating such informative videos so i can fill out my stores of information that I will undoubtedly forget by the time my head hits the pillow, but maybe, just maybe, some of it will stick in my sieve of a brain and I can regurgitate it later to sound smort. ;-)

[@crispycrispylickylicky]

Man it felt rewarding paying attention to biology class when I recognised all the things explained in the video

[@ag135i]

Your video contained much more information than several health professionals video combined and it was clear and easy to understand, kudos.

[@DivineDestinationTarotGuidance]

You guys are making some real content.. really appreciated

[@aurelienhenryobama5434]

I will practice martial arts especially Karate shotokan and I do splits. I lift weights and I am in my 40's. Learning how muscles works is important for my training

[@orcuswells649]

I was just at the gym and wondering about this stuff, and this was a great explanation. I intend to keep increasing my understanding of my own body

[@growwithkarak]

Smooth muscle and cardiac muscle. Well type of muscle depends on different basis considered. If basis is colour(due to myoglobin) - red and white muscles. If basis is ability to contract in our will - voluntary and involuntarily muscles. If basis is location - skeletal and visceral muscles If basis is microscopic striations - striated and non striated muscles.

[@theanatomylab]

Going for your first part of your answer! Thanks for the detailed answer!

[@mathewenewmai1973]

The biology teacher we all wanted as a student.... Hats offf

[@tachiiderp]

Should be a mandatory class for everyone in high school tbh

[@rokman5000]

Can you go deeper into the different types of hypertrophy? I would love to see an in depth video on myofibrillar hypertrophy vs sarcoplasmic hypertrophy.

[@theanatomylab]

Yes, we definitely will add that to the list!

[@crush41gb]

Myofibrillar hypertrophy is the increase in muscle fiber size where the fast twitch fibers, which are 22% bigger and white because there's no oxygen containing blood in them, they run on ATP and creatine, increase in diameter and are more compacted to fire faster and with more force. This is actual muscle growth. The sarcoplasmic hypertrophy is the increase in muscle cell size only due to transient factors like glycogen storage and water retention. Your red, slow twitch fibers which rub on a combination of carbs/fats for fuel results in lactic acid, which ultimately causes the actin/myosin cross bridges to fail, but, it also induces a surge of anabolic hormones like testosterone, growth hormone and insulin like growth factor-1. Every gram of glycogen pulls in approximately 2.7 g of water into the cell to flush out lactic acid, ammonia and creatine will so pull water into the muscle cell. This will give you a pump but, if your adaptation is only one of endurance or failure at good form past 15 reps where the weight isn't heavy enough to illicit your type 2 fibers for growth, or a weight you can handle really slowly or just stop at a number where your body is already that strong and has no reason to change, you will still feel a pump from lactic acid and using more glycogen but, the adaptation you are illiciting is one of endurance at that point. I could go on about what adaptations, time, body's use for fuel, and the pathways it's using but, this has probably bored you to tears. I am a certified trainer, sports nutritionist, nutrient timing and expert on training and nutritional sciences and supplementation.

[@wombat5252]

@@crush41gb How do you explain muscle growth in Keto diet people then? I only experimented with basically a no carb diet while working out and I still gained muscle. WAY different on the feeling of energy though. Felt more ''flat'' during workouts with no explosive like energy but I could handle 3-4 different exercises for a single muscle group being a natural (no enhancements. No drugs nothing. Just food). I'm talking at least 10-12 working sets just on a single muscle such as my Bicep or Tricep.

[@crush41gb]

@@wombat5252 Your body will adapt to using ketones, the incomplete breakdown of fats, fuel in 2-4 weeks so strength and endurance should be normal to speak at least for a time. You can still drive a car full blast on a half tank but, not as long. You would still get creatine in foods on keto like red meat and that will still give your fast twitch fibers the fuel to get some size and depending on your protein intake, the only nutrient that can build and repair muscle, then you can still get bigger, leaner and stronger. If your goal was endurance, you may notice a big difference. This is actuality what's occurring in your second wind. In a low intensity aerobic activity you may take 20-30 minutes to deplete your bodybof glycogen/carbs then your body begins breaking down protein to convert into glycogen through gluconeogenesis.

[@crush41gb]

Your flat feeling is because you have only roughly 25-50 g. carbs daily so no water being pulled into the muscle cell.

[@joshp5162]

Hearing how the most common supplements, like creatine, effect the body would be cool. When you started talking about ATP I wondered if you were going to mention it.

[@efanoide]

Great videos! Very well explained. It would be really interesting to know what happens to the muscles and lungs when you do exercise at high altitudes and how your body adapts to environments with less oxygen.

[@TAROTAI]

Simply the best coverage!

[@methos8894]

With cadavers, this guy takes fitness videos to a whole other level.

[@chiaraschober7903]

Loving the video, as always really informative and very well explained. Would've been cool if you also covered how slow twitch can convert into fast twitch but not the other way round (as far as I've learned), that might be good to know!

[@neilmansfield8329]

This is a great video

[@theanatomylab]

Thank you!

[@mohyim0280]

The other two types of muscles are the cardiac and smooth muscles. The cardiac muscle is also a striated muscle however it's only located in the heart and is specialized to never fatigue or tetanize. Smooth muscles are non-striated muscles that are present in the visceral organs such as the intestine or bladder or even within the walls of blood vessels and they can serve various functions.

[@blankx15]

Damn so what happened to your skeletal muscles?

[@devangirozaro9512]

Your work is amazing.....highly appreciable....

[@1unsung971]

Terrific, as always. Bravo and thank you

[@UltraAlex2000]

sometimes i get halfway through these videos and remember that yes, i am really watching a guy handling pieces of dead people like it's supermarket packaged meat on youtube

[@dinamush1342]

It's amazing how cardiac muscles beat tirelessly, could you imagine if those properties applied to skeletal muscles?

[@samh3438]

Great content as usual,would love to see a video dedicated to the process of muscle hypertrophy.

[@indeswma4904]

I like to watch your videos while I work out, something about it just seems to make sense. Thanks for all the great content!

[@rick31869]

SIR ,,,,,, I WANT TO PERSONALLY THANK YOU FOR ALL YOU DO ,I FIND MYSELF WATCHING YOU AND THE OTHERS AND THIS CHANNEL . A MIND IS A TERRIBLE THING TO WASTE , WITH ALL THE BULLCHIT OUT THERE ITS REALLY NICE TO HAVE THIS SORT OF KNOWLEDGE AND INFORMATION TO BALANCE IT , ALL OUT . AGAIN THANK YOU BROTHER FOR ALL YOU DO !!!!!!! ..........................................

[@bligityblarg]

This is a lot of really cool information! Though one thing I'd like to hear about is how (and why) muscles go in the other direction, atrophy. Though that could also get rolled into a larger topic of what your body does with extended periods of non-sleep rest, like cubicle work.

[@dustencross357]

That would be a very short video, if your muscles don't have a reason to stay then they pack there bags and go...

[@ReapZ1373]

Smooth and cardiac. love your vids

[@theanatomylab]

Thank you!

[@Beast-kw3gk]

Other two are 1)smooth muscle(mostly neurogenic)(two types)- single unit(myogenic)and multi unit(neurogenic )smooth muscles 2)cardiac muscle(myogenic)

[@theanatomylab]

Thanks for answering!

[@wendykelly8551]

I'm agreeing with this person 😊 ..... xx 👍...... haha cus I have no idea

[@Beast-kw3gk]

@@theanatomylab I’m a NEET aspirant! Your channel is a boon for me! Thanks for the reply though

[@colinburgess7728]

great video, gradually expanding the mechanisms involved

[@kirank9086]

Sending you more positive energy and love ❤

[@jayseatea]

Great video...looking forward to more videos about our body's adaptations to fitness. One question on muscle fibers. You mentioned the adaptations of slow vs. fast twitch muscles. You also mentioned that the percentage of slow vs. fast twitch will vary based on the muscle as well as from person to person. Can that unique individualized percentage be altered by significantly altering training and diet? Could an endurance runner shift their training completely and become a power lifter? It seems to me that people are genetically geared one way or the other.

[@brookiebrooke928]

Ah. The days of human anatomy 101. When i’d ponder what I’d eat for lunch while moving around The cadaver parts with my pencil eraser and accidentally place that same eraser on my mouth. 😝

[@theanatomylab]

Bahahahaha. Watching students do that was priceless. Thanks for reminding me of some fond memories!

[@MrCmon113]

Are the cadavers good to eat or already embalmed somehow?

[@xMegaira]

Perfect video for my daily 15-min workout! 💪🏼

[@mr_green33]

great job, keep it up!:)

[@holgerwittmann8419]

Best channel ever!

[@tatamerica6357]

thank you for adding subtitles to this video

[@taraneh363]

Would your do a video on the lymphatic system? I currently have a swollen lymph node on my neck due to covid infection and am wondering how it actually looks like in the body

[@adnan0402]

Yea, smooth and cardiac. The cardiac muscle is the only muscle in the body and doesn't need any assistance from the body or brain to function. Remember your video thoroughly 😜

[@manumusicmist]

You beat me to it. I wish every skeletal muscle was as powerful as the cardiac muscle. They are more powerful than skeletal muscles. Such a shame our design doesn't incorporate such a thing.

[@theanatomylab]

Great! Thank you for answering!

[@journeybeyondthesea]

PURRR

[@arjunys489]

@@manumusicmist Cardiac muscles consist of special cells called Cardiomyocytes which are highly resistant to fatigue.. however these Cardiomyocytes are incapable of voluntary stimulation (they do not respond to nerve input). That's why all muscles aren't like cardiac muscles

[@limtao4083]

Is coordination and regulation of heartbeat by the medulla oblongata not counted as assistance by the brain?

[@wombat5252]

You know what I would like to know that is probably almost impossible to find out? What is the absolute limit on muscle mass and growth for a man as a NATURAL (no drugs. no enhancements. nothing)? How heavy and big can a man become based on genetics and a perfect diet with a perfect workout routine? How much muscle can a man pack on without drugs?

[@EdyMatyy]

I’ve been needing a video like this !

[@invinciblemuffi]

Excellent, well explained and new insights for beginners. Thanks you making the terms easy enough to grasp.

[@voidwonder7904]

amazing video! really enjoyable which is great for rewatching since its difficult for me to retain information 😅

[@fixyourteeth4409]

Thought I was gonna find a anatomical hack to getting ripped 😂

[@theanatomylab]

😂 More to come on that!

[@manumusicmist]

Unfortunately there is none. Using those Steroids have side effects.

[@jodybogdanovich4333]

Airbrushed abs 😉

[@deepalishekhawat708]

I love whenever Jonathon posts a new video❤️❤️..It is always very knowledgeable 🥳🥳..can you make a video on pcod and how pituitary and pancreas are responsible in pcod..🤗🤗

[@theanatomylab]

Thanks for the comment! We have a lot of requests, and PCOS (PCOD) is on the list!

[@DAKTROPBOYS2]

Oh really

[@Nazz-b7p]

Man so when you just grab a weighted ball and throw it... your body has made the sufficient atp, moved it to the necessary locations and done all it's need to do for you to move that weight. AND it's done almost instantly. every single time. The body is INCREDIBLE.

[@l.petermalele5313]

Jonathan’s sense of humour is truly amazing. 😆😆😆

[@AnabolicAsylum]

“A day or 2 later your muscles are ready for more.” (Cries in Leg Day)

[@lexskywalker6373]

You SEE ME. Thank you for representing my Life so accurately 😂😂😂

[@your_fathers]

nah but why am I the opposite

[@MrLIME-wg8lx]

@@your_fathers you don't train hard enough

[@your_fathers]

@@MrLIME-wg8lx maybe

[@jakeedwards9770]

Other people: Ewww a dead body! Me: Forbidden jerky...

[@psidud]

So how does stretching affect all this? As a gymbro this makes me very confused. If I get more flexible, cross sectional area isn't needed, so are my muscles getting longer or is it just the tendons getting longer? Does that mean more flexible joints can't be as springy/store as much energy in the tendon?

[@alpolacci]

Passive stretching (holding positions) has the main objective of de-contracting and relaxing muscle fibers after working out. That's why you should do it at the and of a training session (to reduce soreness and discomfort in the following hours/days) but NOT before training (reduces performance) or off days (passive stretching on cold muscles really does almost nothing). Active stretching (going through the extremes of the range of motion and actively contracting the muscles involved) on the other hand has the objective of getting your muscles and ligaments used to be active and in control through those degrees of motion. This makes you more injury resilient (because if you get in a position you never trained in, you are quite likely to get injured) and also allows you to train in a more hypertrophic way (longer range of motion usually results in better hypertrophy). Hope you find this useful.

[@yashparmar5901]

Your channel is extremely informative and the way in which you present your information is very good I find your videos extremely watchable please never stop making videos love from your indian viewer.

[@manishisin26]

Thanks a lot for putting out such detailed & informative videos.