Andrew Huberman· PhD
And it acts as sort of a seesaw to adjust your overall level of alertness.
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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.
And it acts as sort of a seesaw to adjust your overall level of alertness.
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Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
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You're either alert or calm. You're either asleep or stressed. Those two states are not compatible with one another.
so the sympathetic and the parasympathetic aspect of the autonomic nervous system are always in a push pull with one another think of them more less on a teeter totter when one end goes up the other end goes down they're really in competition with one another and it's their balance that reflects how alert or how sleepy we happen to be