The second cause of insomnia is to play a Smartphone during the night. Using a Smartphone before closing the fire bed makes the brain has a blue light on the screen, Smartphone, which will give you insomnia, or sleep soundly no blue light on there because the screen is going to inhibit the work of the chemical in the brain called "melatonin", which allows the brain to sleep because of the confusion, I think this is also the daytime is it might be difficult to sleep.
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