The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
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The strangers in your dreams are actually people that you've seen in real life.
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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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One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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Those who get out of bed by 7am are more likely to be thinner and happier.
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47% of people have a nightmare at least once a month.
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44% of kids watch television before they go to sleep.
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You forget 90% of your dreams.
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