Huberman Lab The Science & Practice of Perfecting Your Sleep | Dr. Matt Walker
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Aug 2, 2021 
In this discussion, Dr. Matt Walker, a renowned Professor of Neuroscience and Psychology and founder of the Center for Human Sleep Science, dives deep into the biology of sleep. He uncovers how various factors, from sunlight exposure to caffeine and alcohol, affect sleep quality. The conversation also highlights the critical role of REM sleep in emotional health and longevity. Plus, Dr. Walker shares practical tips for enhancing sleep quality, including the benefits of napping and natural supplements like magnesium.
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CBD and Sleep
- CBD's impact on sleep is unclear. Low doses may be wake-promoting, higher doses sedating.
- Potential mechanisms include temperature regulation, anxiety reduction, and modulating adenosine signaling.
Melatonin Supplementation
- Melatonin signals day/night timing to the brain, but supplements have weak effects on sleep.
- Optimal doses are much lower (0.1-0.3 mg) than typical supplements (3-6 mg).
High-Dose Melatonin Risks
- Super-physiological doses of melatonin (10-20x natural levels) may suppress reproductive hormones.
- Be cautious about excessive doses and consider potential side effects.
