Andrew Huberman· PhD
Shorter days are conducive to aggression. Not because days are short per se, but because stress hormone levels are higher and because dopamine levels are lower.
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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.
Shorter days are conducive to aggression. Not because days are short per se, but because stress hormone levels are higher and because dopamine levels are lower.
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