Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
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Dieters who sleep more take off more fat that those who sleep less.
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Lack of water is the #1 trigger of daytime fatigue.
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The human brain is more active during sleep than during the day.
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Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
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A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
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