One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
Lack of water is the #1 trigger of daytime fatigue.
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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People who sleep late have more mental stamina and can outperform early risers.
33
Honeybees never sleep.
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