Sea otters hold hands while sleeping so they don’t drift away from each other.
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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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You can reschedule your sleeping pattern by not eating 12-16 hours before you want to be awake. Upon eating after this time period, your internal clock will reset to a new day, with the time of your first meal being interpreted as "morning".
11
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
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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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