In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
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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.
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Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
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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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Lack of water is the #1 trigger of daytime fatigue.
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You can reschedule your sleeping pattern by not eating 12-16 hours before you want to be awake. Upon eating after this time period, your internal clock will reset to a new day, with the time of your first meal being interpreted as "morning".
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The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
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