From: NPR
Exposure to Bright Light Can Help Fend Off Winter Blues. The Time to Start Is Now
September 30, 2025
Our bodies can be quite sensitive to changes in daylight because we rely on it to regulate our circadian rhythms and our sleep-wake patterns.
And because our internal body clocks don’t keep a perfect 24-hour cycle, the master clock in our brains needs a daily reset. “Light through the eyes” is the cue for the reset, explains Michael Terman, a retired professor of clinical psychology and psychiatry at Columbia University.
That’s why exposure to morning light is so important. “What we are doing is resetting that drifting circadian clock to synchronize with the outdoor world,” Terman explains.
Read the whole story (subscription may be required): NPR
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