One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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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
If you hold farts in during the day, they'll just come out when you sleep.
16
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
44% of kids watch television before they go to sleep.
106
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
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