Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
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Bats sleep 18-20 hours per day.
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The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
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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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Lack of water is the #1 trigger of daytime fatigue.
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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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A new baby usually deprives each of it's parents around 350-400 hours of sleep in the first year. That is one entire nights sleep per week, per parent.
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