One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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If you hold farts in during the day, they'll just come out when you sleep.
16
Honeybees never sleep.
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Lack of water is the #1 trigger of daytime fatigue.
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47% of people have a nightmare at least once a month.
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The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
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.
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