While blue light is environmentally friendly, it may not always be so friendly to our health. For example, blue light can affect your sleep and potentially contribute to disease. Until the invention of artificial light, the sun was our only source of light, and once it had set, people spent their time in relative darkness.
00:00 What Is Blue Light
02:21 Blue Light and Sleep
03:18 Blue Light and Eye Strain
04:03 How to Limit Blue Light Exposure
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