Andrew Huberman· PhD
if you're finding that you can't become a day person or a morning person, shifting your light exposure, exercise, and food intake to the daytime will help.
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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.
if you're finding that you can't become a day person or a morning person, shifting your light exposure, exercise, and food intake to the daytime will help.
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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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But if you're finding that you can't become a day person or a morning person, shifting your light exposure, exercise and food intake to the daytime will help.
10 minutes of bright outdoor light within the first hour of waking anchors the circadian phase and improves sleep onset that night.
Morning sunlight exposure shifts the cortisol awakening response forward, improving daytime alertness.
Long-term morning sunlight reduces age-related macular degeneration risk.
Sleep regularity predicts all-cause mortality more strongly than sleep duration.
Tracking deep sleep on a wearable accurately reflects EEG-measured slow-wave sleep.
Caffeine has a half-life long enough that consumption after 2pm measurably degrades deep sleep in slow metabolizers.