143: Sleep Smarter: The Science of When with Dr. Michael Breus
You've been told to get eight hours of sleep your whole life. Dr. Michael Breus — The Sleep Doctor — says that's not only wrong, it may be making things worse. In this conversation with Dwayne Kerrigan, one of the world's foremost sleep specialists breaks down the science of when to sleep, when to drink caffeine, when to workout, and why most people's sleep problems aren't about how much they sleep — they're about when.
In this episode:
- The four chronotypes — Lion, Bear, Wolf, and Dolphin — and why knowing yours could reduce your total sleep while dramatically improving quality; plus why 55% of the population are Bears, and what that means for your nine-to-five schedule
- The 90-minute caffeine rule: how adrenaline and cortisol make caffeine useless for the first 90 minutes after waking, and when to stop caffeine entirely to protect your sleep
- The biology of the 1:00–3:00 AM wake-up: every human on Earth wakes up in this window due to a cortisol spike — and Dr. Breus's four-step protocol for getting back to sleep, including the four-seven-eight breathing technique developed by Dr. Andrew Weil for Navy snipers
- Why alcohol destroys Stage 3 and 4 deep sleep — the physical restoration stage where the brain's glymphatic system flushes beta amyloid and tau proteins linked to Alzheimer's disease — and the exact wine-with-dinner timing strategy that lets you drink without wrecking your sleep
- Sleep tracking devices: why none of them are accurate for measuring sleep stages, why rings outperform wristbands, why you should only review your tracker data once a week, and how to use trend analysis rather than nightly numbers
- Dr. Breus's personal disclosure: he has moderate obstructive sleep apnea and stops breathing 26 times an hour — and why he wants every listener to stop avoiding sleep testing out of fear
Discover Your Chronotype - Take The Quiz: https://sleepdoctor.com/pages/dr-breus-podcast-dwayne-kerrigan
Episode Highlights:
00:00 - Entrepreneurs Sleep Differently
00:33 - Welcome and Guest Introduction
01:06 - Tony Robbins Connection
03:17 - Meet Dr Michael Breus
05:05 - Middle of Night Awakenings
07:40 - Understanding Chronotypes
11:31 - The Lion Chronotype
12:47 - The Bear Chronotype
13:18 - The Wolf Chronotype
14:23 - The Dolphin Chronotype
18:07 - Bad Sleep Habits
20:39 - Morning Workouts and Cortisol
22:27 - Perfect Time for Sex
25:20 - Understanding Cortisol
26:37 - Why We Wake at 3AM
28:57 - Don't Go Pee
30:52 - Don't Look at the Clock
31:43 - Four Seven Eight Breathing
34:59 - Getting Out of Bed
36:28 - Stay Positive
38:06 - Breathing Technique Recap
38:51 - Breathing Techniques Really Work
42:50 - Alcohol and Sleep Quality
46:47 - Caffeine Timing Guidelines
49:49 - Cannabis and Sleep
51:39 - Understanding Sleep Stages
54:29 - Sleep Cycles Explained
56:11 - Sleep Tracking Devices
01:00:08 - Choosing the Right Tracker
01:04:18 - Heart Rate Variability
01:07:17 - Quality Over Quantity
01:08:46 - Sleep Apnea and Testing
01:12:12 - Finding Your Sleep Need
01:12:36 - Closing Thoughts and Stay Tuned for Part 2
Resources mentioned:
- Several of Dr. Michael Breus’ books – The Power of When, Energize!, The Sleep Doctor's Diet Plan, Good Night, and Sleep, Drink, Breathe
- Four-seven-eight breathing technique — developed by Dr. Andrew Weil
- Muse headband — brainwave monitoring headband for sleep and meditation
- Oura Ring — sleep tracking ring
- Whoop Strap — activity and sleep tracker
- Apple Watch — sleep tracking
- The Happy Ring from Happy Sleep — FDA-approved ring for sleep studies
- Tony Robbins’s book Unleash the Power Within
Quotes:
“Eight hours is a myth, man. So many people try to force themselves to get... The math doesn't even work. Like, the right number of cycles doesn't even end up at eight hours.” - Dr. Michael Breus
“ I really, honestly, legitimately feel like I've dumbed myself down a little bit when it comes to, when it comes to my, like, abuse of sleep over the years.” - Dwayne Kerrigan
“To be clear, dude, you are your best doctor. When you wake up in the morning, if you feel good, you feel good. Like, you slept well.” - Dr. Michael Breus
“ The first liquid that crosses your lips every morning should not, I repeat, not be caffeinated.” - Dr. Michael Breus
“ Stop thinking about hours. This is a quality game, not a quantity game. If you get six and a half hours of good quality sleep- As a sleep doctor, I am much more interested than if you get eight hours of crappy sleep.” - Dr. Michael Breus
Dr. Michael Breus, Ph.D., is a double board-certified Clinical Psychologist and Clinical Sleep Specialist, and one of only 168 psychologists in the world to have passed the Sleep Medicine Boards without attending medical school. Known as The Sleep Doctor, he is the founder of sleepdoctor.com, was named the Top Sleep Specialist in California by Reader’s Digest, and one of the 10 most influential people in sleep. He is the author of several books including The Power of When and Sleep, Drink, Breathe: Wellness is Too Complicated, and has appeared on Oprah, CNN, The Today Show, and The Dr. Oz Show more than 40 times, and lectures globally for organizations including YPO and Tony Robbins' Unleash the Power Within.
Connect with Dr. Michael Breus:
YouTube: Sleep Doctor
Instagram: Sleep Doctor (@thesleepdoctor)
Take the Original Chronotype Quiz | SleepDoctor.com
Sleep Doctor At Home Sleep Test (SleepDoctor.com)
The Sleep Doctor At-Home Sleep Test provides clinical-level sleep analysis from the comfort of your own bed. Using two simple sensors and a connected app, users receive personalized results reviewed by a licensed provider in under a week.
Connect with Dwayne Kerrigan
Disclaimer: The views, information, or opinions expressed by guests during The Dwayne Kerrigan Podcast are solely those of the individuals involved and do not necessarily represent those of Dwayne Kerrigan and his affiliates. Dwayne Kerrigan or The Dwayne Kerrigan Podcast is not responsible for and does not verify the accuracy of any of the information contained in the podcast series. The primary purpose of this podcast is to educate and inform. Listeners are advised to consult with a qualified professional or specialist before making any decisions based on the content of this podcast.