Daylight exposure in the morning

Free everyday life tip: Daylight exposure in the morning (step 7 of 11 from "Sleep Better Tonight Without Supplements").

Within 30 minutes of waking, get outside or stand near a bright window for 10–15 minutes. Morning light — even on an overcast day — sends a signal through your eyes to the suprachiasmatic nucleus (your master clock) that resets your circadian rhythm. This is the counterpart to dimming lights at night: bright light in the morning says 'wake up,' dim light at night says 'wind down.'

If you work from home and your morning does not involve going outside, step onto a balcony, open the curtains wide, or walk to a nearby café for your coffee. The light intensity matters — indoor lighting is 200–500 lux, overcast outdoor light is 10,000+ lux. No lamp in your house can replicate daylight. This habit costs zero money and takes zero extra time if you drink your morning coffee by a window instead of in a dark kitchen.