Dieters who sleep more take off more fat that those who sleep less.
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47% of people have a nightmare at least once a month.
186
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
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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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