Andrew Huberman· PhD
Expect to feel really alert ~1 hour before your natural bedtime. This is a naturally occurring spike in wakefulness that sleep researchers have observed.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
Expect to feel really alert ~1 hour before your natural bedtime. This is a naturally occurring spike in wakefulness that sleep researchers have observed.
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He's shown is that the peak output, of the circadian clock for wakefulness, in other words the peak of our wakefulness, and the suppression of the sleep signal, actually happens very late in the day.
And that's because the sleep drive is extremely strong, but there's a circadian rhythm that drives wakefulness in the morning.
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