There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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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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Sea otters hold hands while sleeping so they don’t drift away from each other.
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The average person falls asleep in seven minutes.
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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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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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