Brighter days and better sleep

More outdoor light in the day is beneficial for sleep and mood. We examined self-reported outdoor light exposure in over 400,000 people and found that more hours spent outdoors during the day was associated with greater ease of getting up, less frequent tiredness, fewer insomnia symptoms, and earlier timing preference. In addition, more outdoor light was associated with lower odds of lifetime major depressive disorder, antidepressant usage, and low mood. Click on the picture below for a link to the paper.