No Stupid Questions

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[SERIES] What are the 1st PRINCIPLES of sleep (lemmy.world)

submitted 3 weeks ago by cheese_greater@lemmy.world to c/nostupidquestions@lemmy.ca

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view bright light in on waking for beginning of sleep cycle
dim all lights in evening for end

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[–] Proprietary_Blend@lemmy.world 4 points 3 weeks ago* (last edited 3 weeks ago)

It's not the brightness of the light. It's specific wavelengths (480 nm) that activate the intrinsically photosensitive retinal ganglion cells which release melanopsin to control circadian rhythm via the suprachiasmatic nucleus.

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