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Sleep & Recovery

Sunlight, Darkness, and Sleep: Aligning Your Body Clock

2026-05-146 min read|By Peak State Editorial Board
Sunlight, Darkness, and Sleep: Aligning Your Body Clock

Your Body's Internal Clock

Your body has a built-in internal clock that controls when you feel awake and when you feel sleepy. This clock relies heavily on natural light to know what time of day it is. If you spend all day indoors under dim office lights, your body clock gets confused, leading to poor sleep and daytime tiredness.

Sunlight: The Reset Button

Bright morning sunlight entering your eyes acts like a giant reset button. It tells your brain to stop making melatonin (the sleep hormone) and start making cortisol (the awake hormone).

Daily Sunlight Routine

  1. Get Morning Light: Go outside for 10 minutes within the first hour of waking up. Even on cloudy days, outdoor light is much brighter than indoor lights.
  2. Dim the Lights at Night: Turn off bright overhead lights after dinner. Use lamps to help your brain prepare for sleep.
Medical Disclaimer

Disclaimer: The information in this article is for educational and informational purposes only. It is not intended as medical advice. Always consult a qualified medical professional or doctor for any health-related questions or concerns.

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