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LI · P1 · LightStrong evidence
Morning Light
Light on the retina sets the suprachiasmatic nucleus.
energysleep 10m
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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.
Morning light is the strongest signal for the body clock. It advances circadian timing, improves nighttime melatonin, and steadies mood and energy across the day.