The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
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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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Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
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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.
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If you hold farts in during the day, they'll just come out when you sleep.
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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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The average cat sleeps about 2/3 of the day.
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Dieters who sleep more take off more fat that those who sleep less.
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