Andrew Huberman· PhD
Avoid viewing bright lights—especially bright overhead lights between 10 pm and 4 am.
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We can't find evidence that holds up here. Proponents are reasoning from mechanism or analogy rather than direct human data, and the most credible skeptics raise objections we can't dismiss.
Avoid viewing bright lights—especially bright overhead lights between 10 pm and 4 am.
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it takes very little photon energy to reset and shift our clock after 8:00 PM. And that's why you want to, as much as you safely can, avoid bright light and even not so bright light between the hours of 10:00 or 11:00 PM and 4:00 AM.