All light is the problem
Light at night means less melatonin - which means poor sleep and a foggy brain the next day. Blue light sends a powerful signal to your brain that it is daytime, but it's not the only problem. All light is a problem. After dark, all light should be reduced, with as little light as possible after 8 PM.
While we probably won't sit around during the evening in the dark, we can reduce overhead lighting and reduce the blue light on your screens.
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