Why Light at Night Disrupts Your Sleep

"Sleep is a pretty vulnerable place; the brain needs to know that it's safe" (:56)
Computers, digital clocks, and electronics with light displays all go against good sleep habits, says Carol Ash, DO.

One of the most important bedroom conditions needed for good sleep is darkness. In this video, Carol Ash, DO, medical director of the Sleep for Life center in Hillsborough, N.J., explains why the brain needs the absence of light to transition into sleep—and why our modern lifestyles detract from the dark, calm environment that our bodies need.

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