Winding down/Helping your body know it's sleep time
The basic idea here is that your body naturally produces melatonin to help you get to sleep. But your body is using the ambient light to determine that it's night/that you should be winding down. So with artificial "sunlight" in the form of lamps and screens, your body may not be getting the right cues. Here are some things that might help:
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Staying asleep/getting back to sleep
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