# 132 Dr. Michael Breus: Sleep Times and Chronotypes: Are You a Lion, Bear, Wolf or Dolphin

Page: https://stenobird.com/podcast/growing-older-living-younger-about-longevity-wellness-healthspan-3700595/132-dr-michael-breus-sleep-times-and-chronotypes-are-you-a-lion-bear-wolf-or-dolphin
Text version: https://stenobird.com/podcast/growing-older-living-younger-about-longevity-wellness-healthspan-3700595/132-dr-michael-breus-sleep-times-and-chronotypes-are-you-a-lion-bear-wolf-or-dolphin.md
Podcast: [Growing Older Living Younger: About longevity, wellness, healthspan,](https://stenobird.com/podcast/growing-older-living-younger-about-longevity-wellness-healthspan-3700595)
Published: 2026-04-10T09:00:00+00:00
Episode link: https://golyproject.libsyn.com/132-dr-michael-breus-sleep-times-and-chronotypes-are-you-a-lion-bear-wolf-or-dolphin
Audio file: https://traffic.libsyn.com/secure/golyproject/breus.mp3?dest-id=2765309
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JSON: https://stenobird.com/v1/public/podcasts/growing-older-living-younger-about-longevity-wellness-healthspan-3700595/episodes/132-dr-michael-breus-sleep-times-and-chronotypes-are-you-a-lion-bear-wolf-or-dolphin
Duration seconds: 2231

## Resource

THIS FLASHBACK FRIDAY EPISODE 132 OF GROWING OLDER LIVING YOUNGER focuses on understanding how our unique internal circadian rhythms, derived from interaction of genotype with environment, define our chronotype, which can help us optimize the times at which we should sleep, eat, exercise, interact with others and much more. Today's Featured Expert is Dr. Michael Breus, Clinical Psychologist, diplomate of the American Board of Sleep Medicine, and a fellow of the American Academy of Sleep Medicine. Dr. Breus is the author of The Power of When , a biohacking guidebook showing that, based on your genetic, biological chronotype, there is an optimal time to do everything from eating to exercising, to even asking for a raise. He is the author of two other books, focusing on sleep, The Sleep Doctors Four Week Program to Better Sleep and Better Health , and The Sleep Doctor's Diet Plan . Known as the Sleep Doctor, Dr. Breus is recognised for his characterization of 4 chronotypes, Lion, Bear, Wolf and Dolphin. Episode Timeline: 0.11 Intro to Sleep medicine and chronobiology 5:41 Genetics, time zones and personality traits 10:20 Circadian science and biological clocks. 21:06 Sleep disturbances and muscle cramps 26:55 Sleep apnea and its impact on daily life. 32:57 A Sleep Doctor's approach to Aging, Wellness and Genetics About this episode's Featured Expert: Dr. Michael Breus Website: www.sleepdoctor.com https://www.linkedin.com/in/thesleepdoctor/ A bout Your Host: Dr. Gillian Lockitch Download your free Guide to Living Younger Longer . Schedule a free Discovery Call with Dr. Gill Email Dr. Gill at askdrgill@gmail.com About Your Host: Dr. Gillian Lockitch website: https://www.askdrgill.com/ Facebook: https://www.facebook.com/gillian.lockitch/ https://www.facebook.com/groups/growi…

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