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LI · P1 · LightStrong evidence
Screen-Off Wind Down
Removes melatonin-suppressing evening light.
sleepcalm 30m
Check before you begin
Stop if this practice increases distress, pain, dizziness, or feels unsafe.
About this evidence tier
This is a provisional editorial rating for the general practice, not proof that it treats a condition. Research citations will be attached after source-level review. Use the safety notes and judge the practice by your own tracked response.
Evening light, especially blue-rich screens, delays melatonin. A screen-off window protects sleep onset and depth.