There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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The harder you concentrate on falling asleep, the less likely you are to fall asleep.
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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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Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
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Honeybees never sleep.
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