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1 It makes them feel protected
Some people sleep with a blanket even in hot weather because it makes them feel protected against anything that might touch them while they're asleep.
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2 They're used to it
Some people were conditioned ever since they were children to sleep with a blanket. This habit could stay with them even in their adulthood.
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3 The body temperature drops
The body temperature drops at night while a person is sleeping, which makes some people feel cold and in need of a blanket.
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4 It raises seratonin levels
Studies have shown that sleeping with a blanket raises seratonin levels while a person is asleep, which makes a person feel calm and happy.
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5 They sleep naked
Some people sleep without any clothes on and use a cotton blanket to cover themselves at night for security.
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6 To protect themselves from insects
Some people cover themselves up with a blanket even in hot weather to protect themselves from any insects that might be there.
