How 15 Minutes of Morning Sunlight Can Reset Your Sleep Cycle
A short burst of morning sunlight can reset the body’s internal clock and improve sleep. Just 10 to 15 minutes outdoors may be enough to anchor circadian rhythms. New research also suggests light affects behaviour in ways beyond the well-known circadian pathways.
Morning light acts as a powerful signal for the body’s master clock, the suprachiasmatic nucleus (SCN). It not only realigns this clock but also corrects rhythms that have drifted out of sync. Exposure triggers cortisol production, boosting alertness, mood and energy levels throughout the day.
Small doses of morning sunlight offer measurable improvements to sleep hygiene and daily energy. The effects rely on light reaching the eyes without obstruction. For those struggling with sleep or low mood, a brief outdoor routine could provide a simple, science-backed solution.
