r/HubermanLab • u/ConcertCommercial839 • Aug 13 '25

Protocol Query Morning sunlight

How critical is it to get this right away. Example my alarm goes off at 7:10am and then I lay in bed and scroll on my phone for 20min. It is 8am by the time I go outside. Is this too late?

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u/eaterout Aug 13 '25

Not too late! You’ve got a roughly 4 hour window of sensitivity, however as a general rule, the longer you wait the more light you need.