Your body has a natural time-keeping clock known as your circadian rhythm. It affects your brain, body, and hormones, helping you stay awake and telling your body when it’s time to sleep.
Natural sunlight or bright light during the day helps keep your circadian rhythm healthy. This improves daytime energy, as well as nighttime sleep quality and duration
In people with insomnia, daytime bright light exposure improved sleep quality and duration. It also reduced the time it took to fall asleep by 83%
A similar study in older adults found that 2 hours of bright light exposure during the day increased the amount of sleep by 2 hours and sleep efficiency by 80%.
While most research involves people with severe sleep issues, daily light exposure will most likely help you even if you experience average sleep.
Try getting daily sunlight exposure or — if this is not practical — invest in an artificial bright light device or bulbs.
Daily sunlight or artificial bright light can improve sleep quality and duration, especially if you have severe sleep issues or insomnia.