Sunlight & Circadian Light
Daylight exposure to set your body clock.
Getting daylight, especially in the morning, anchors your circadian rhythm and supports sleep, mood, and vitamin D.
Why it matters
Light is the master signal for your internal clock. Morning daylight helps you feel alert during the day and sleepy at the right time at night, improving both energy and sleep quality.
Sun exposure also drives natural vitamin D production. Where sunlight is limited, vitamin D supplementation is one of the clearest examples of a supplement standing in for a missing environmental input.
Putting it into practice
- Get outdoor light within an hour or two of waking.
- Take daylight breaks through the day when you can.
- Dim indoor and screen light in the evening.
- Consider vitamin D when sun exposure is low.