Cows can sleep standing up, but they can only dream lying down.
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The average person falls asleep in seven minutes.
115
Those who get out of bed by 7am are more likely to be thinner and happier.
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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.
212
Honeybees never sleep.
276
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
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