Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
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You forget 90% of your dreams.
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47% of people have a nightmare at least once a month.
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"Dysania" is the state of finding it hard getting up out of bed in the morning.
33
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
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.
15
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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