Andrew Huberman· PhD
And heightened wakefulness from naturally elevated morning cortisol (a good thing) prior to caffeine.
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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 heightened wakefulness from naturally elevated morning cortisol (a good thing) prior to caffeine.
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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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It's very important that that cortisol pulse come early in the day, or at least, early in your period of wakefulness, I say that because some people are waking up at 8:00 p.m. and are sleeping all day, but it's very important that that pulse of cortisol occur early in the day and that it happens all at once
And if you haven't already caught on to this yet, you literally wake up because of a rise in cortisol. It's called the cortisol awakening response or CAR C A R C cortisol awakening response. The importance of cortisol for waking up and for feeling alert early in the day cannot be overstated.