Bats sleep 18-20 hours per day.
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Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
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If you hold farts in during the day, they'll just come out when you sleep.
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The harder you concentrate on falling asleep, the less likely you are to fall asleep.
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Termites work 24 hours per day and they do not sleep.
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
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