The Sleepless Ape: How Shorter Sleep Sparked Human Evolution | Dr. David R. Samson | Ep. 41

Sleep Masterclass: A Guide To Better Rest, Health & Longevity | In Vivo w/ Dr. Michael Mak | Ep. 22 - https://youtu.be/AdWexi6fnts Why do humans sleep less than any other primate on Earth, yet possess the largest brains and highest cognitive abilities? In this episode of In Vivo, evolutionary biologist Dr. David Sampson joins the show to unpack the fascinating paradox of human sleep. We dive deep into his immersive fieldwork with the Hadza tribe, the neural mechanics of how your brain flushes out toxins at night, and why our modern obsession with sleep deprivation might be missing the true biological anchor: our circadian rhythm. Dr. David Sampson is an Associate Professor at the University of Toronto Mississauga and the director of the Shell Sleep and Human Evolution Lab. He is also the author of the groundbreaking book, The Sleepless Ape. 00:00 Introduction & Personal Sleep Story 02:40 What Is Sleep? (Behavior, Physiology & Brain State) 07:50 The Glymphatic System: The Brain’s Cleaning System 10:40 Sleep Architecture Explained (NREM Stages) 15:10 REM Sleep: The Nighttime Therapist 19:50 The Human Sleep Paradox 24:10 Phylogenetic Study: Why REM Was “Protected” 27:40 Godzilla Sleep: Body Mass & Power Laws 32:10 From Trees to Ground: The Evolution of Human Sleep 38:50 The “Shell” – Humanity’s Sleep Exophenotype 48:20 Hadza Research: Asynchronous Sleep & Lookouts 57:40 The Sleep Epidemic Myth 1:05:10 Circadian Mismatch: The Real Problem 1:13:40 Practical Advice: Light, Morning Sun & Sleep Hygiene 1:22:20 The Future of Sleep (Space, Mars & Evolution) 1:27:40 What Sleep Ultimately Tells Us About Being Human #SleepParadox #DavidSamson #TheSleeplessApe #HumanEvolution #CircadianRhythm #Hadza #SleepScience #REM Sleep #SleepEpidemic #EvolutionaryAnthropology Dr. Samson's lab - https://www.utm.utoronto.ca/shel/ Dr. Samson's wesbsite - https://davidrsamson.com/ Buy 'The Sleepless Ape' - https://a.co/d/09qP1pxd Dr. Samson on X - https://x.com/Primalprimate In Vivo on X - https://x.com/InVivoPodOnX In Vivo on Spotify - https://open.spotify.com/show/5GBvPPvSx52O6ILuam4LoX?si=6c903566ae7b4761&nd=1&dlsi=254f9f5e78194002 In Vivo on Apple Podcast - https://podcasts.apple.com/us/podcast/in-vivo/id1775578563 In Vivo on Amazon Podcasts - https://music.amazon.ca/podcasts/1ac4dbec-df46-4d1f-b0a1-742e9656ef44/in-vivo