Morning Light Is a Sleep Tool, Not Just a Mood Booster

Getting bright light within the first hour of waking is one of the most powerful things you can do for your sleep — not just your mood. Sunlight hitting your eyes signals your brain to start the countdown toward melatonin release roughly 14-16 hours later. Even on a cloudy day, outdoor light is dramatically brighter than indoor lighting. Aim for 10-15 minutes outside in the morning. It costs nothing and quietly regulates your entire sleep-wake cycle.