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Connection between darkness and tiredness
Why do you get tired when its dark? Is there a connection?
If you find any good links that describe it, that would be great!! :)
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also, there's association, or whats called classical conditioning.
for the most part, people sleep at night when its dark and always have all their life. crawling into bed in a nice dark room every night to go to sleep is basically a habit that you get used to doing. you associate the dark with relaxation and sleeping, which can make you tired.
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It's called serotonin.
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