The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
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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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Bats sleep 18-20 hours per day.
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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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47% of people have a nightmare at least once a month.
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You burn more calories sleeping than you do watching television.
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If you hold farts in during the day, they'll just come out when you sleep.
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