One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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The average person falls asleep in seven minutes.
115
Bats sleep 18-20 hours per day.
5
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
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The strangers in your dreams are actually people that you've seen in real life.
50
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15