Andrew Huberman· PhD
Approx 4 hrs after waking is the circadian dead zone and your clock is impervious to sunlight exposure to the eyes at that time.
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The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
Approx 4 hrs after waking is the circadian dead zone and your clock is impervious to sunlight exposure to the eyes at that time.
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You're not going to shift your clock. Nothing that you do in that time in terms of light viewing behavior, feeding, etc, is going to shift your clock.
In the middle of the day, once the sun is overhead, or even if you stay inside all morning, and then you're in the circadian dead zone, which sounds terrible and it is terrible. You doesn't matter if you get a ton of artificial light or even sunlight, you're not going to shift your circadian clock. You're not going to get that wake up signal.
we know that the middle of the day and the middle of the night are circadian dead zones
we know that the middle of the day and the middle of the night are circadian dead zones you can't shift your circadian rhythm that well in the middle of the
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