There is a lot of confusion about blue light. Not all blue light is the same. Its important to understand the differences in wavelength and the critical difference in timing our exposure to blue light. Best time is earlier in the day.
Researchers have started to use an interesting marker for resilience and behavioral flexibility. It is called heart rate variability (HRV).
This new study joins a growing body of research indicating that a lack of direct sunlight may reshape the human eye and impair vision.
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