Matt Walker: Sleep | Lex Fridman Podcast

[@lexfridman]

Here are the timestamps. Please check out our sponsors to support this podcast. 0:00 - Introduction & sponsor mentions: - Stamps.com: stamps.com and use code LEX to get free postage & scale - Squarespace: lexfridman.com/squarespace and use code LEX to get 10% off - Athletic Greens: athleticgreens.com/lex and use code LEX to get 1 month of fish oil - BetterHelp: betterhelp.com/lex to get 10% off - Onnit: lexfridman.com/onnit to get up to 10% off 2:05 - Putin moment: Lex takes Matt's sunglasses 2:26 - Fascination with sleep 6:35 - Why do we sleep? 15:06 - Computer vision for driver assistance 24:28 - Consciousness is fundamental 32:34 - Lex on human to robot connection 35:01 - Scent of a Woman is better than "John Wick" 46:42 - Distinction between coffee and caffeine 1:12:26 - The science of 'sleeping on it' 1:26:19 - Lex on his sleeping schedule 1:51:23 - Chronotypes 1:58:52 - How to overcome insomnia 2:16:15 - Diet and sleep 2:25:12 - Where do dreams come from? 2:38:50 - How sleep affects emotions 2:45:43 - Meaning of life

[@jimrodtka852]

Lex, if you really want super human problems solving skills, you MUST try an extended water fast.....like more than 10 days. Love your content!

[@RoscoeDaMule]

@@Daniel.Stanescu guy is a liar and a shill that provides zero credible info. Bob Lazar provides more harm to our society than good due to him talking about divine conscious beings that there are no proof of. hearing someone talk about divine conscious creatures, and saying these divine conscious beings know about them is just kinda sad ngl. im not sure lex would like that. hearing someone say that there are divine conscious beings that are out there that know all about themselves seems to have restarted at Gobekli Tepe after the cataclysms, but the need for religions and fake beings out there have no need for oursociety any more really.

[@afterhoursafv5366]

KZbin doesn’t allow captions for this podcast, especially when this particular guest stated patients with dementia (another disability group)were ignored, ironically.

[@marjankrebelj4007]

Dear Lex, for the purpose of the interview it is always much better to place the strongest lights on the opposite side of the camera. You may want to add some fill-in light from the camera direction, but that is lees crucial. This way you'll get much more professional looking results. Otherwise I love your work and please carry on. :)

[@funtimes8296]

@@jimrodtka852 Go on...

[@hubermanlab]

Brilliance on both sides. Thank you for holding and recording this conversation so that we all can benefit.

[@KingofVending]

I see you 🤘

[@2425amit]

@@grrkerson Both of those already exist and they are wonderful podcasts!

[@diegoserna6667]

Dr.Huberman, please please team up with Walker and Sinclair in a podcast episode hosted by Fridman and title it “HOW TO BECOME IMMORTAL”

[@sisoski]

I would like to understand why it so that I get the Micro sleeps almost all of the time I drive and not only the car but the motorcycle also?

[@danzaathedancer7761]

I agree wholeheartedly

[@diegoserna6667]

We need a crossover episode with Andrew Huberman, David Sinclair, and Mathew Walker hosted by Fridman titled “HOW TO BECOME IMORTAL”

[@AxelRios]

Hahaha please

[@ghyutin3]

@@ianagtsk please God no

[@x.Aura.x]

we need ice king Wim Hof in on this

[@sumaclane8020]

dont forget Rich Roll ..

[@barbarayorkwoodside3716]

Lol

[@dougster571]

His podcast with joe rogan changed how I sleep which then changed my life. Cheers matt!

[@ttt6648]

Reading Matt's book last year had the same effect on me. If you're interested in something equally mindblowing/lifechanging, I would highly recommend James Nestor's Breath. He was on JRE too, episode 1506. Take care, sleep well and use your nose! :)

[@ttt6648]

@James xxx that might be the case, it still got me to re-evaluate how I sleep and change my behaviour accordingly. I got additional information from the Huberman Lab podcast to fine tune my day even more. Whatever Matt might have gotten wrong, I don't know, but I applied his advice to my day to day life and kept following it, if I felt like it worked.

[@IvanSolonenko]

@@ttt6648 Unfortunately, it's more that that. It becomes pretty obvious from 'Matthew Walker's "Why We Sleep" Is Riddled with Scientific and Factual Errors' that Walker commits research misconduct like all the time and still stays in the limelight and with so many people worhipping him. He should have been banned from academia ages ago, yet here we are having him at the Lex's podcast :(

[@arohkraehmer]

Yes. I (reluctantly) added sleep and a sleep tracker to my life immediately after the JRE appearance. I was a "I only need 6 hours" sleep machismo

[@csn583]

@@IvanSolonenko @James xxx And from the way you two awkwardly cut and paste the same phrase "it becomes pretty obvious" that you are bots on a vendetta, with nothing to add.

[@hunterdorsett]

This guy is so awesome. His response to Lex’s consciousness question is incredibly insightful, intriguing, and profound and answers his question as best as he can directly. That’s not easy, off the cuff.

[@wernerbro3208]

Ye hes very intelligent. Maybe more than lex

[@Kavriel]

@@wernerbro3208 I don't know if it's wise to compare intelligence. You can learn from anyone.

[@orirune3079]

@Ville Vuorinen Me too, it's not common for me but not particularly rare that I become someone else in my dreams.

[@Dayvit78]

I also found it insightful. But, then again he had 20 years to think about it :) Still brilliant coversation.

[@carpediemjonah8110]

Matthew Walker has been interviewed by so many highly qualified and highly respected individuals. But you have brought out the heart and soul of this brilliant scientist. Well done.

[@maxwellschaphorst8574]

It's only looking back I realize how thankful I am to Matthew Walker. I was a perpetual 5-7 hr sleeper (usually 6ish) and was constantly caffeinated and tired. Hearing him on Joe Rogan's podcast, I decided to test out actually sticking to a routine of 8 hrs every night (min 7.5, some nights 9 or 10). And I can't say enough about the benefits this has given me. I thought I didn't have time for that extra hour due to work, but now with more sleep I'm so productive I have way more free time even with that hour lost. I no longer drink coffee, yet feel my focus, energy and overall willpower is 10x higher than when I had to caffeinate myself to get a job done. It just feels like I have more brainpower, my anxiety dropped incredibly lower, and I'm just way happier overall. So thanks again Matt Walker, keep spreading the gospel of sleep!

[@arjk5878]

Lex I don’t know if you read these comments, but this is by far my favorite episode. The way things are explained with a passion is remarkable.

[@RCTricking]

Love how well Matthew presents! His passion, knowledge, and pacing/ vocal variety are on point.

[@neotower420]

his confidence.. and humility are also quite endearing, he's calm about admitting he tackled an age old question with a 2 year timeframe, and humble in admitting he was at the 20 year mark.

[@AnonYmous-rw6un]

Actually, I found his speech pattern annoying enough that despite the interesting content I had to stop listening. But maybe I'm just tired.

[@neotower420]

@@AnonYmous-rw6un This is one of those video's I'm going to remember is there, and come back to finish when I'm ready to absorb as much insight as possible.

[@funtimes8296]

@James xxx So is your face

[@IvanSolonenko]

@@funtimes8296 What they were trying to say is not a statement but the name of an article debunking Walker's book, just search 'Matthew Walker Guzey'

[@koiulm84]

Matt Walker’s voice and speaking pace is so peaceful and soothing, I really enjoyed listening to this in bed before falling asleep.

[@eirini98]

The results of a good, peaceful night's sleep, I guess haha

[@imerovislam]

How can you put so much content in a month? It's incredible! I am on the road 5-6 hours a day, I can't imagine not listening to your podcast every time I'm on the road now. And sometimes I feel drawn to the podcast even at home. Amazing work Lex, keep going!

[@AssailantLF]

I think he simply manages his time very well. He has a video about his daily schedule, and once you see that, it makes sense that he's able to be so productive over time.

[@ronniessebaggala362]

He has the sleep schedule of a coke head and the time management skills of the gregorian calendar.

[@agenfavo2903]

@@AssailantLF can you share the link of video man v

[@romanmarshall2382]

if nothing else Matt, you've absolutely helped me receive higher quality and more consistent sleep. I'm truly thankful for that and hope you continue to enlighten the rest of the world.

[@se7enty17]

His answer to the meaning of life really hit me, it's such a simplistic answer on the surface but I found it so profound at the same time. For whatever reason it really grabbed me, brought tears to my eyes while listening on the train.

[@abraxaseyes87]

Feeling your heart is so good for your soul. When you feel something and see something at the same.

[@XoXo475]

This is up there with one of Lex’s best interviews. Superb guest

[@Duneadaim]

Heres my annual plea for a John Carmack interview, to chat about his inroads with AGI and his recent fawning over by Elon, and also the request of his aerospace knowledge and engineering acumen for SpaceX.

[@taylorparrish4323]

I second that

[@theraygood]

John is a visionaire and an iconic figure, also as mentioned, he happens to be doing work with AI.

[@0ooTheMAXXoo0]

Did you see him on Rogan a couple years ago?

[@Duneadaim]

@@0ooTheMAXXoo0 sure did.. great listen!

[@Building_Brian]

Totally read this as John Cena, lolololol!

[@miriammandel1968]

A-MAZING! Couldn’t stop watching! Best interview with Matt Walker I’ve seen! I LOVE the exchange and challenges Lex introduces! Thank you both!

[@DrDress]

1:29:00 Lex: I know all these great people who didn't sleep a lot. Matt: Yeah, I know a lot more about them.

[@petermozuraitis5219]

Yes ! This is the perfect podcast to catch up on any of the new revelations of understanding sleep ! Haven't seen Mr Walker since his Rogan talk a few years ago and that one stands out, for me.

[@Aceboggy3223]

Did you see recent article in Apple news? Made the conclusion of sleeping alone is much wiser and better for my sleep I’d rather sleep on a hard floor with few blankets instead with my partner in a bed . Although I have extremely bad back and I’ve probably increased my % of getting dementia ten fold just past two years with averaging 2-4 hours of napping through the night . I only recently started sleeping on floor and felt it’s better .

[@Corrans]

Matt Walker speaks so eloquently, calmly, clearly and is easy to follow and understand even though it's big ideas he's discussing. He is amazing.

[@SuperSimonLewis]

Loved this. Felt like conversational chess, as both picked their way so thoughtfully through the discussion. Fascinating.

[@Kavriel]

I feel a kind of tranquil wisdom from Matt, he feels balanced between emotional intelligence and rationality. Balance is a beautiful thing. Hard to obtain, and hard to keep.

[@tacmason]

The most useful 2.5 hours I have spent listening to podcasts-I only wish I could have listened to/Heard this, when I was Ten years old !

[@geoblk3000]

Matthew is a great educator, one of the few books I gave 5/5 stars, it's that good. It totally changed my mind about the priority between diet, exercise and sleep.

[@jameslastname9737]

Yeah, you learn that basically diet and exercise won’t get you far at all if you don’t also catch your Z’s

[@geoblk3000]

Even if we take exercise out of the equation, before reading his book, I always thought that a good healthy diet is basically all you need and had a sort of "we sleep when we're dead" mentality. It turns out that sleep is much more important before my priority was like diet > exercise > sleep, now diet > sleep > exercise, but diet and exercise start to move on the same level tbh.

[@geoblk3000]

@James xxx for example?

[@anitaboone2985]

I love Matt Walker's thoughtful responses, and how he stayed true to his vision of bringing the truth from the health perspective of sleep to everyone. He has definitely impacted how I approach sleep. Many thanks for the wonderful messaging and staying true to your passion.

[@seankerr9158]

Matt’s hair is the best advertisement for the value of sleep I’ve seen

[@canyonhaverfield2201]

That Matt's hair isn't his but that of a hairdresser's cream solution is important .I don't hesitate to say, who can you trust when they present as they imagine they wished they were. I keep imagine these two..out on the range roping calf's, returning to a campfire, then carrying on about memory enhancing, triple espresso's & skipping two days sleep in order to collaborate with silicon valley think tanks.., man Im so deeply grateful not to be so scattered as to what a valuable life means🎈

[@humbertosequeira1536]

Matt I’ve watched your TedTalk, read docs from you, shared them w friends, thank you for your work! I think probably millions of people are depriving themselves from sleeping, I’ve done it myself. Now I urge everyone the importance of sleeping well for our health. Lex thank you for keep trying make the World better, your podcasts are deeply educational, smart and sincere. Greetings from an Engineer in Costa Rica 🇨🇷

[@supernatural802]

31:25 - 32:35 this is such a deep thought! so good. This is one of my favorite episodes so far. The mystery of sleep and the dreaming state and the questions it makes us ask ourselves about consciousness are just so fascinating. Matt Walker is absolutely brilliant in his delivery on the subject here. Nice work!

[@eirini98]

Lex, I don't know if you will read this, but, if I remember correctly, when I first saw one or two videos in which you appeared, I didn't like you. I think you were criticizing someone I admired, or whatever (not that you care). However, I have grown to love your vulnerability, mental acuity, and willingness to discuss things we the listeners either have battled with ourselves or didn't even think needed to be discussed! This interview, in particular, was simply amazing. Matt is a great guy with a huge heart. He is genuine (from what I can tell), just as you are. I really wish you success with your channel, teaching, and all you do. Your upbringing (Russian, if I am not mistaken) really seems to have prepared you to help us "Westerners" see things from a different perspective. This interview went way beyond sleep and has encouraged me to get back into my passions (while sustaining them with good sleep haha), some of which include research and asking big questions like you guys do. 10/10. I hope to watch this interview 2/3 more times.

[@effiekallist]

-Beautiful flow of conversation -Matt Walker's passion, amazing educational skill, lots of really apt analogies and quotes regarding the physiology of sleep -Lex's talent at being a really smooth interlocutor -An extremely interesting and useful topic ....made this a beautiful experience. Thank you

[@amieanderson9827]

Just found this podcast its 4:40am in the uk and excited to binge watch !! Thank you !!

[@aaronscottmatthews7883]

Lex surely has anticipated this meeting of minds for a while

[@southside6093]

*Literally about to go to sleep and this gets posted. Lex you sage*

[@kibsmith]

Wow, Matt was super articulate and measured in his responses. I love his work and have read his book: Why We Sleep. I've seen lots of interviews with Matt, but Lex added a very unique and deep element that brought out aspects of Matt that I haven't seen before.

[@Techniclay]

Mathew walker changed my life🙏. I struggle to begin to have words to describe. narcolepsy impacts every single aspect of life and is more terrifying then anyone can ever imagine, and that's just the day time sleepiness the handful of other symptoms are enough to consider giving up. My narcolepsy went from aggressively dangerous to nearly comfortable thanks to this wonderful human being. I've had many doctors who could clearly care less about my well-being: 1 doctor told me to stop my cataplexy just not to laugh or get angry. 2 none of them REALLY gave me actions or information to help... scientists are the best doctors..👍 THANKS MATTHEW WALKER! Oh and Lex is a bad ass too, your killing it! your an inspiration thanks for what your do and thanks for another great podcast 👍

[@garyingle7440]

Don’t ever change ~ Please always stay as genuine as you are.

[@ninnin9723]

Because of Matt Walker I'm much more conscious and strict about my sleep schedule. Thank you Matt!

[@eirini98]

Me too

[@nazaninhaddadpour2957]

I am, as a chemist that has a t-shirt that says : " eat, sleep, chemistry, repeat", utterly fascinated by your ideas about enjoying your life as a scientist even if it doesn't make any sense to other people. In this journey, I repeat to myself what David Goggins says: A lot of people don't understand me, I'm glad you don't understand me. Merry Christmas, good on you!

[@HecmarJayam]

The was a couple of questions when Lex idealistic conceptions challenged some of the core arguments but Matt handled them beautifully. I enjoyed this interview immensely.

[@TheForeboding]

Matt, your book, masterclass and various talks never cease to amaze. Thanks for having another wonderful guest, Lex.

[@Mr29082001]

Sleeping is a nice thing. Pretty happy you are trying it Lex

[@TheRealStructurer]

Nice to see two so knowledge persons being so humble. Sure role models for me!

[@detocquevi11e]

Actually about a month ago, I had an experience where I had no sense of identity in a dream, and awoke in the same state.... no sense of who I was, or what my past had been. It took about 10 seconds from upon waking (amid increasing concern) for everything to "snap back" into place. I've had this happen 4-5 times in my life, always when having what feels to be a very deep sleep. I have been experimenting with potassium supplementation lately, and have been experiencing sleep deeper than I have in quite a few years. I've asked several people whether they have experienced this, but have yet to find someone who has.

[@vicgoogle4514]

Don’t take too much potassium.

[@WindowHeavy]

Look into Ramana Maharshi and forget about supplements. If you begin to meditate and investigate your identity you will likely make great progress. M.: Sleep is not ignorance; it is your pure state. Wakefulness is not knowledge; it is ignorance. There is full awareness in sleep; there is total ignorance in waking. Your real nature covers both, and extends beyond. The Self is beyond knowledge and ignorance. Sleep, dream and waking are only modes passing before the Self. They proceed whether you are aware or not. That is the state of the Jnani in whom pass the states of waking, samadhi, deep sleep and dream, like the bulls moving, standing or being unyoked when the passenger is asleep as aforesaid. These questions are from the point of view of the ajnani; otherwise these questions do not arise. (From 'Talks with Sri Ramana Maharshi' 313)

[@detocquevi11e]

@@vicgoogle4514 Thanks, that's a good point to make for anyone reading this comment.

[@DaveW74TVN]

I've experienced this multiple times generally because of a heroic dose of psilocybin the night before or excessive amounts of high grade marijuana. A few times from being awakened during night terrors or sleep walking.

[@SirPhytone]

This is often referred to as ego death and very common when taking high doses of psychedelics, infact some people intentionally try to experience this, just because of the many positive effects you can have after the experience. It can make you see life from a completely different perspective.

[@engelic16]

Wonderful interview, thank you, always a pleasure to listen to Matthew, he has such energy and engaging way of presenting information but this one felt special, deeper, more meaningful and emotional. I have read his book as well and would highly recommend it to everyone, I actually have gifted it to several people and will keep doing it!

[@samienaamien7038]

I just love the Scent of a Woman chat! Integrity is EVERYTHING! And I feel the same way about the movie and Al Pacino's acting, esp that hearing scene- the best speech ever!

[@tycho_m]

Why We Sleep is one of my favorite books. It's incredibly heartfelt and compassionate. Even besides the vast amounts of referenced research, the advice is really impactful on a human level. It helped me make more conscientious choices about how to spend my time, awake and asleep, in general.

[@nate8415]

Matt was the only person who educated me on the fact that weed suppresses rem sleep. My sleep and overall quality of life has improved drastically since I quit smoking and I have him to thank

[@csn583]

Ironically this knowledge led me to smoke/vape MORE (in evenings) to avoid edibles with their longer-lasting effects. That said I'm low dose with either, and wouldn't recommend either for falling asleep.

[@nate8415]

@@csn583 doesn’t even have to be before bed, long term use even if you’re not high when you go to sleep will cause it. It takes about a week for me to dream again when I stop smoking

[@nickgarnero9843]

I never dreamed when I smoked weed. Alcohol has a similar affect on me as well. Probably a disruption in deep sleep.

[@MattCookVideos]

But now you’re not smoking weed and giving yourself access to ultra rapid mind body improvement. (Yeah yeah, muh ‘can get that without weed just fine’, ok).

[@northernhemisphere4906]

congrats on quitting, enjoy improved well being.👌🥕

[@guitarpick335]

2:05:12 : A very good analogy on what is involved in going to sleep...

[@Mattytube18]

I love Matthew Walker. This to date is the best interview I’ve seen of him. Lex shows his youthful playful spirit and cuts sone of the seriousness of Matthew’s personality and in return we get a joyous result in our response. Thank you Lex, thank you Matthew, for being you. ♥️🙏🏼

[@rahulbhattacharjee3295]

Great explanation by Matthew Walker. Thanks sir for explaining the importance of sleep.

[@nicholaskoenig3106]

Dr Walker's book 'Why We Sleep'...is a fantastic insight to NOT only Why...but WHAT happens when going into the 'Daily Coma'. Sleeping well must be the single most important piece to staying awake for it.

[@unedited8204]

Matt Walker and Lex Fridman are legends, and are as wise and fascinating as they are also humble and curious to keep learning and understanding. This conversation spans some very interesting, useful, sometimes even unexpected, territory, and is WELL worth watching and listening to, I would say, for anyone who can take the time to do so.

[@connormatthews522]

Beautiful conversation and a beautiful ending

[@PatrikRasch]

I love Matthew Walker so much. He's helped me and by now probably millions of others gain serious knowledge and insight into a topic that's been somehow mostly disregarded by society. My appreciation for this podcast and others he's done is immense. Thank you so extremely much for both of your work, it's 100% changed my life.

[@souar2]

I really respect Matt for recognising and explaining that he sounded a bit puritanical in the book and in the public a few years ago. I actually got quite anxious about my own sleep, coffee (which I really enjoy), and circadian rythm.

[@lnc-to4ku]

What an incredibly eloquent and thoughtful man Matt Walker is! I so loved this whole conversation! Lex, I'm not sure if you'll ever read this, but I too fall in the "night owl" category. I'm an artist, and extremely passionate about what I do, unfortunately all my creativity and ideas come to me in full drive at nighttime. I've had to alter my natural internal clock at times, but it never feels natural for me. And I too get a lot of well intentioned people giving me concerned advice at times. Ack!

[@danielkaminske5048]

I slept so good while trying to listen to this.

[@bryandraughn9830]

Excellent! Just damn excellent Lex! Thank you for such a fantastic interview!

[@publicshared1780]

"thank you for what you do for the world and for me included". +1 to that! Thank you so much Lex 😊

[@szebike]

This guy changed my life to the better. Three years ago I saw him on Joe Rogans Podcast and was in the " all nighter are ok now and then" and "sometimes you need to sacrifice sleep to get things done / increase your free time" attitdue big time. After I saw it I really tried to get 7.5 hours of sleep every day (it wasn't always possible to get it on one shot because of my shitty job but if I couldn't I tried to sleep after work that day). After all that time I can say I got way less sick and if I got sick it wasn't that bad. I became more productive and creative after all that time I now really can feel it if I'm sleep deprived and got "addicted" to get enough sleep. So if you are unsure I would say give it a try at least for 3 months after that you won't go back ever again. If you have to manage your time *do not cut your sleeping time* search for other things to cut but not sleep. If you skip sleep your wear and tear on your body is too high and you will pay the price either now (by becoming sick easier and thus loosing all your time you got from all nighter anyway) or later with heart attacks and brain failures.

[@ss-ig7to]

what a beautiful conversation and a show of respect. Thank you for this

[@onair5900]

Thank you, Lex. On the one hand, it's wonderful to have someone who can ask questions that are as good as, if not better than, the answers. On the other hand, it's amazing to see how imperfect we are and how much potential we have as a species as a result of that imperfection. Спасибо.

[@terriwatson2840]

Please work as hard as you can and as much as you can. I am envious that you have found your passion and are enfolded in it! Yes, I may live a decade or so longer than you and other brilliant scientists, but you will live a much richer life than myself and many others. Work your ass off! And thank you for sharing your brilliance in your podcasts.

[@harveymacasaet1277]

Matthew Walker gets me to feel excited about sleeping. Really. I look forward to sleeping now more than ever. I love dreams even if they are nightmares sometimes.

[@pomat22]

Lex thanks for bringing Matt here. !!!

[@never3b99]

OMFG YES!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I get so hyped when I see a Lex guest whose literature ive delved into. Thanks so much both of yall.

[@neildutoit5177]

I just want to thank this man for making me feel like I'm not inferior for not being a morning person. I've been given so much shit my whole life called lazy and unmotivated and everything in between. But i'm productive as all hell. I'm just productive between noon and midnight.

[@DatsunDrigo]

What an amazing episode

[@henryclay8424]

Wow! Another one for the record books. Amazingly useful content, and fantastic human connection between the two. Bravo, gents.

[@pierrembadenhorstt]

@lex thank you for your service!

[@juliedriscoll8551]

Was feeling a bit yucky today so I thought I’d lie down and listen… I actually dozed off! Not because it was boring but both of your voices are so soothing and calming to my ear! Thank the Lord for rewind! Love this conversation!

[@adriang9942]

Loved this episode, one of my favorite so far, can't wait to get started on Matt's book. Keep up the great work Lex!

[@kt4774]

Lex this conversation was awesome. You have such a unique style of asking questions and sharing. Matt's work is so interesting.

[@steveoh9025]

Lex: "Can I ask you a philosophical question, before we get into the fun details?" *Me Thinking* "is there really a differentiation there? and how is this NOT fun already? This conversation is fascinating AND entertaining!"

[@youngpaulione]

Well said about working hard to accomplish your goals and dreams.

[@AlexandruNicolin]

47:00 I'm the same, very high tolerance for caffeine. Usually I drink about 1L of coffee a day but I've had plenty of days when I drank 2L. Most days it's 1L of coffee in the morning and 2L of green tea in the afternoon and evening :)

[@funtimes8296]

Holy crap, how though?

[@AlexandruNicolin]

Well I've only started drinking coffee heavily when I quit smoking, about 8 and a half years ago; I did that from one day to the next after smoking 10-15 strong cigarettes a day for 10 years or so. My sleep patterns haven't changed that much. In fact if I drink less or not at all for a week or so I sleep exactly the same. My heart rate and blood pressure are also normal. So it doesn't seem to have a strong effect on me.

[@AlexandruNicolin]

I was pretty chubby because of reduced physical activity during the pandemic so I cut my food intake by about 2/3 from ~1800 kcal to 600 kcal or less, single meal taken at mid day or slightly later. The reduced food intake and spacing the last meal to about 8 hours before I go to bed seemed to have added about an hour of sleep while drinking more/less coffee/tea doesn't seem to do much.

[@samienaamien7038]

Love this conversation!

[@brookezhuang3133]

I just recently watched Matt Walker's interview with Andrew Huberman and it was just packed with biology. I find it quite interesting that this interview with Lex actually covers different aspects of sleep/brain. I thoroughly enjoyed both.

[@Vlow52]

Thanks for the conversation, Lex. Superb as always. Can you ask Matt more about conscious dreaming studies and effects if you’ll have another round in the future? It has really interesting ideas and seemingly affects the learning process on the level close to the real world practices.

[@21972012145525]

His points about Ramadan actually seem helpful when you look at it in the context of the goals of the spiritual month: it’s encouraged to stay up and pray. Sex is not allowed while fasting (sunrise to sunset), etc

[@Brand00d]

Always a great guest

[@MzCR73]

Love your content, Lex!

[@thinkoutloud6517]

Thank you for this wonderful podcast! I appreciate both of your expertise and your thoughtfulness in this conversation. Love Matt's book. It's a life changer!

[@jerredrogero9640]

You should try and have Naval on. Would be a fantastic discussion.

[@laplaptop]

Lex "It's Kind of A Dance Between" Fridman

[@jameslastname9737]

Dude has a great book - highly recommend

[@dzingunyte]

Sleep is the blessing for me! Love good night's sleep.

[@RobotProctor]

Wow, what a resource to have in the podcast space. Thanks for joining the space, Matt! I've subbed to the podcast. Looking forward to learning.

[@Apollo-tc6sy]

I should be sleeping, but instead I'm watching this.

[@ianmcmahon4706]

I have just listened to Clara Sousa-Silva and Michael Malice in entirety and I'm working in 6 hours! And then I see this!!!!

[@youngbahss3220]

Literally everyone

[@Killua-c3j]

It’s 11:00 AM in New Jersey where are you bro😂😭

[@maikolgeromin7548]

I was waiting for Matt to eventually come to the podcast, and it finally happened

[@karlhoffman4676]

Another fantastic educational podcast with 2 intelligent speakers. Just perfect. 👌

[@IvanSolonenko]

Unfortunately, even though sleep is vital and some stuff claimed by Walker is true, he systematically misinterpretes scientific data and commits research misconduct. Just search 'Matthew Walker Guzey' for a total debunk of his book Why We Sleep

[@rayneweber7942]

Loved this guy on Huberman. Made me realize sleeping once a week is gonna kill me.

[@mr.marciniak6982]

Jesus Christ once a week wtf

[@orirune3079]

Pretty sure once a week would kill you within a few months

[@rayneweber7942]

@@orirune3079 I've decided I need to quit the drugs. This guy and Huberman spoke some sense into me.

[@orirune3079]

@@rayneweber7942 Nice! Good luck to you!

[@nickgarnero9843]

@@rayneweber7942 Way to go man! Keep it up.

[@cathalbuckley3606]

His JRE appearance was super intriguing

[@AaronLyons]

@James xxx yet countless people experience improvements by following his advice

[@husseinfaiz3397]

@James xxx how so?

[@devin1862]

exceptionally good show today. Lex keeps getting better and better

[@GATEWAY2MARS]

I’ve been WAITING for Matt Walker to come on here. FINALLY. ❤️

[@sofialilly4821]

love this guy.. been waiting for a new pod with him on big up lex

[@EricLight]

Would you like fris with that? Lex: you know, that question really makes me think about AI,

[@game-f-un-limitedgamer8958]

I was so looking forward to this conversation of yours with Jim.

[@bleached463]

2:33:39 The only question that matters Great interview, you guys are great

[@cjfromgtasanadreas]

Lol I was excited to hear the question, thought it was serious

[@lorenzodiloreto3708]

Awesome, now i found something to do while bored at my university lol Would love to see some economic and/or financial people back here man!! As always, the best podcast there is!

[@Hexanitrobenzene]

~1:14:00 Hm. I've read quite a bit about history of chemistry. That story is usually told about August Kekule, when he dreamed in his sleep about six monkeys joining a circle catching each other by the tail, and thus got insight into the structure of benzene compound. I haven't heard such a story about Mendeleev.