Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
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A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
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Dieters who sleep more take off more fat that those who sleep less.
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Honeybees never sleep.
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47% of people have a nightmare at least once a month.
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The strangers in your dreams are actually people that you've seen in real life.
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Lack of water is the #1 trigger of daytime fatigue.
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