logo
episode-header-image
Aug 21
1h 2m

6 Hours Of Sleep Per Night Is OK??? Plus...

BEN GREENFIELD
About this episode

I’m always on the lookout for a good book on sleep, and I recently read one of the better titles I’ve found in the past few years:

How to Sleep Like a Caveman: Ancient Wisdom for a Better Night's Rest—Based on the Evolutionary Science of Sleep from Saber-Toothed Tigers to Modern Insomnia.

Written by today’s podcast guest, Dr. Merijn van de Laar, one of the world’s leading sleep scientists, it is a bit like Sapiens meets Why We Sleep in an evolutionary romp through the science of sleep—and how you can get better rest.

If you’re curious about the science of sleep, what our evolutionary past can teach you, and actionable ways to wake up truly rested, this episode is for you.

Full show notes: https://bengreenfieldlife.com/cavemansleep

Episode Sponsors: 

CAROL Bike: The science is clear—CAROL Bike is your ticket to a healthier, more vibrant life. And for a limited time, you can get $100 off yours with the code BEN. Don't wait any longer, join over 25,000 riders and visit carolbike.com/ben today. 

Gameday Men’s Health: Gameday Men's Health offers science-backed, physician-led men's health optimization with personalized protocols for testosterone, peptide therapy, ED treatment, and more—helping you perform at your best whether you're training hard or keeping up with life. Visit gamedaymenshealth.com/bengreenfield for a free testosterone test and consultation at a clinic near you.

Just Thrive: For a limited time, you can save 20% off a 90-day bottle of Just Thrive Probiotic and Just Calm at justthrivehealth.com/ben with promo code BEN. That’s like getting a month for FREE—take control today with Just Thrive!

Calroy: Head on over to calroy.com/ben and save over $50 when you purchase the Vascanox (a breakthrough product providing nitric oxide support for up to 24 hours with a single dose) and Arterosil (a premier supplement to support the endothelial glycocalyx—the fragile inner lining of the entire vascular system) bundle at calroy.com/ben. Plus, you'll receive a free canister of 2-in-1 Nitric Oxide Test Strips with a 3-pack bundle purchase.

Ketone-IQ: Ketone-IQ delivers science-backed performance fuel that increases power output by 19%, reduces fatigue by 10%, and naturally boosts EPO production for better oxygen delivery—trusted by elite athletes like Jon Jones and Olympic champions. Save 30% on your subscription plus get a free gift with your second shipment at Ketone.com/BENG.

See omnystudio.com/listener for privacy information.

Up next
Aug 22
Why Your Peptides Might Be Dangerous (& Where To Get CLEAN Peptides), How Women Should Eat, Supplement & Train Differently Than Men, & More With Dr. Melissa Grill-Petersen
In this fascinating episode, Dr. Melissa Grill-Petersen guides you through the latest science on female longevity, metabolic health, and strategies for healthy aging. You’ll get to discover why so many of the health and nutrition recommendations you hear might not actually be tai ... Show More
1h 9m
Aug 16
A “Hack” For Making Ultraprocessed Foods Less Unhealthy, Eating “Wild Foods,” What Sports Make You Smarter (And Increase Longevity) & More: Solosode #493
In this fascinating solosode, you'll receive a range of practical hacks and cutting-edge research to elevate your health, fitness, and mental performance. The episode kicks off with an unexpected experiment featuring retatrutide—a triple-action peptide that targets multiple hunge ... Show More
30m 18s
Aug 14
Are Tanning Beds Safe, The CRAZY Future Of Red Light Therapy & The "Sun Sandwich" concept, Robot Massages, Korean Face Masks & More With Kris Sweeting.
In this episode, you’ll get to explore the fascinating world of photobiomodulation and cutting-edge light therapy with one of its true innovators, Kris Sweeting. You'll dive deep into the science, application, and surprising real-world stories behind the red, UVA, and UVB light d ... Show More
1h 2m
Recommended Episodes
Jun 18
Are You Setting Yourself Up For BJJ Success?
If you were going to cut a tree down, what would be your tool of choice -- Chainsaw or axe? This is an episode about preparation. Are you putting in the preparation before training? Or are you just hacking away exerting as much effort as possible. While working hard is great, bei ... Show More
15m 59s
Aug 2024
079: Training for HYROX Dallas: The Next Fitness Challenge
I discuss my new training journey for the HYROX competition set for November 23, 2024, in Dallas, Texas. I'll talk about what HYROX is, how it differs from CrossFit, and detail my current training structure and dietary adjustments. Also, I'll touch on my motivation for en ... Show More
55m 7s
Jul 2023
2210: Biggest Marathon, Half-Marathon Training Mistakes by the Free Form Fitness Team on Practicing For Long Runs
The Free Form Fitness team talks about marathon and half-marathon training mistakesEpisode 2210: Biggest Marathon, Half-Marathon Training Mistakes by the Free Form Fitness Team on Practicing For Long RunsThe vision behind Free Form Fitness is to create a fitness company that is s ... Show More
11m 38s
Apr 2025
Do These Exercises to Burn Fat, Increase Your Fitness, & Age in Reverse - With Derek Williams
Staying fit as you age requires greater level of dedication and awareness. It also takes a smart strategy that can help you maximize your results, avoid injuries, and build functionality. On today’s show, you’re going to learn actionable steps to increase your fitness as you age. ... Show More
1h 1m
Jun 1
Cutting Weight In BJJ: Right Or Wrong?
On today's QNA episode, we get a call from one of our longtime members of the community Ben with the infamous batman voice. He shares his struggles with his recent health scare and how he plans to go about it. We also get a question about a controversial topic: cutting weight. Is ... Show More
17m 19s
Sep 2024
Dr. Thomas Cunningham, MD: Pro Clinic on Supplementation and Biohacking to Boost Strength, Recover Faster, Improve Endurance, and Feel Better
 In this Pro Clinic, Dr. Thomas Cunningham, MD covers: Clinical trials and studies that show the most promise for enhancing performance and health on and off the rock Supplements and biohacks that range from most-proven to most-fringe How to boost: strength endurance recovery lon ... Show More
41m 40s
Jan 2025
Why Women Are Training Wrong: Fix Hormones, Build Strength & Recover Smarter w/ Dr. Andy Galpin Part 1
Ep. 165: How do you define peak performance? Today Dr. Andy Galpin, world renowned human performance scientist, joins us to explore what it means to optimize your body and mind - whether you’re an elite athlete or just starting your health journey. We discuss how to remove perfor ... Show More
47m 3s
Jul 5
The Man Behind Kohli & Dhoni’s Fitness | India’s Top Coach Speaks Out
In this power-packed episode, legendary strength and conditioning coach Basu Shanker, the man behind Virat Kohli’s iconic fitness transformation, dives deep into the mindset, science, and discipline that separate elite athletes from the rest. From high-altitude training benefits ... Show More
56m 49s
Mar 2025
148. Better Than Cardio? How Weighted Vests Hack Your Fitness Biology
Did you know that the simple act of carrying weight could be the fitness hack that could elevate your strength, brain function, metabolism, and longevity? Rucking, the practice of walking with weighted resistance, is far more than just “walking with weight.” This centuries-old tr ... Show More
10m 28s