Huberman & Walker on Caffeine, Sleep, and Naps

The Afternoon Nap and Biphasic Sleep

Walker explains that most people experience a postprandial dip between 1:00 and 4:00 p.m., which many try to combat with caffeine. Caffeine is a psychoactive stimulant and one of the most commonly used drugs worldwide, with more than 90% of adults consuming it daily.

Huberman mentions that caffeine is one of the few drugs people take just to feel normal. Walker has changed his mind about caffeine and is willing to discuss why, along with some guardrails.

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