
Boundless Life How To COOL Your Body For Better Sleep, INCREDIBLE Travel Sleep Tips & Orion Vs. Eight Sleep With Dr. Michael Breus
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Dec 13, 2025 Dr. Michael Breus, a renowned clinical psychologist and sleep specialist, shares his expertise on the crucial relationship between body temperature and sleep quality. He reveals how core temperature impacts melatonin release and offers tips on evening routines, like baths and exercise, to optimize sleep. Dr. Breus also discusses innovative sleep technologies like the Orion mattress and its personalized temperature features. Plus, he shares practical travel hacks for ensuring restful nights away from home, including strategic packing and hotel room setups.
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Body Temperature Drives Sleep Timing
- Core body temperature governs sleep timing because cooling triggers melatonin release.
- If your body doesn't cool, melatonin release decreases and sleep initiation falters.
Time Evening Exercise For Sleep
- Avoid vigorous evening exercise within 90–120 minutes of bedtime to prevent elevated core temperature.
- If you must exercise late, wait ~4 hours for full cooling or use a cooling strategy like a cool shower earlier.
Warm Bath Can Improve Sleep Onset
- Passive external heating before bed (warm bath or mat) can paradoxically help sleep by triggering a post-heat cooling drop.
- That artificial warming prompts melatonin release and aids sleep initiation.









