Does This Sleep Fasting Hack Actually Cut Cortisol? : 1508 episode artwork

EPISODE · Jul 26, 2026 · 10 MIN

Does This Sleep Fasting Hack Actually Cut Cortisol? : 1508

from The Human Upgrade: Biohacking for Longevity & Performance

You’ve probably tried everything to sleep better. Magnesium. Melatonin. Blackout curtains. Maybe even expensive sleep gadgets. But what if the real reason your sleep feels broken has nothing to do with any of those things?In this video, Dave Asprey explains a hidden biological process that controls whether your body stays in stress mode at night… or finally switches into deep recovery mode. He breaks down why so many people wake up exhausted, why cortisol stays elevated while you sleep, and why your body may never fully enter repair mode even if you’re technically asleep.You’ll learn how one overlooked habit affects your brain, metabolism, recovery, heart rate, and overnight repair systems, plus the surprising research that showed dramatic changes in sleep quality from a single adjustment. Once you understand this mechanism, you’ll never look at sleep the same way again.Try Danger Creatine: https://dangercoffee.com/products/danger-creatineTry TrueDark glasses: https://truedark.comTry Danger Coffee: https://dangercoffee.com/discount/davetubeTry Suppgrade Labs: https://shopsuppgradelabs.com/I have spent twenty years and millions of dollars testing every legal focus drug I could get my hands on. In this video, I break down which compounds actually work, which ones are a waste of money, and the exact stack that delivers hours of clean focus without the afternoon crash.The shift is simple: focus isn't a willpower problem. It's an energy production problem inside your brain. Once you fuel it at the cellular level, deep focus stops being a struggle and becomes the default state.Thank you to our sponsors!PredictiveMind™ | Get your Brain Pattern Mapping report at predictivemind.io/dave and use code DAVE for 10% off.Viome | Check it out at viome.com and use code 16DAVE for 16% off. It’s time to stop guessing and start knowing your body.iRestore | Reverse hair loss at www.irestore.com/DAVE and get exclusive savings on the iRestore Elite, use code DAVE00:00 – Trailer00:53 – Sleep Environment Matters03:44 – Red Light Bulbs04:50 – Blackout Curtains05:16 – Light-Blocking Glasses07:16 – Morning Supplement Stack07:41 – Creatine for the Brain11:48 – MCT Oil Fuel13:06 – Cellular Cleanup (Autophagy)15:12 – Magnesium for Sleep16:56 – Full Stack Recap18:26 – Biohacking Is AccessiblConnect with Dave Asprey!Website: https://daveasprey.comTikTok: https://www.tiktok.com/@daveaspreyofficialInstagram: https://www.instagram.com/dave.asprey/Facebook: https://www.facebook.com/Daveaspreyofficial/X: https://x.com/daveaspreyYouTube: https://www.youtube.com/c/daveaspreybprThe Human Upgrade Podcast: https://www.instagram.com/TheHumanUpgradePodcast/ https://m.facebook.com/Thehumanupgrade/Dave Asprey’s BEYOND Conference: https://beyondconference.com/Dave Asprey’s New Book - Heavily Meditated: https://daveasprey.com/heavily-meditated/Dave's favorite supplements: https://www.shopsuppgradelabs.com/discount/DAVE15Upgrade Labs: https://upgradelabs.com40 Years of Zen: https://40yearsofzen.comSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Episode metadata supplied by the publisher feed · Published Jul 26, 2026

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Eating within three hours of bedtime keeps your body's "digestion kitchen" running, blocking the cortisol dip needed for deep overnight repair — so a simple three-hour pre-bed food cutoff ("sleep fasting") can dramatically improve sleep quality, energy, and recovery.

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Does This Sleep Fasting Hack Actually Cut Cortisol? : 1508

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