The human brain is more active during sleep than during the 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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44% of kids watch television before they go to sleep.
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Dieters who sleep more take off more fat that those who sleep less.
159
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
The strangers in your dreams are actually people that you've seen in real life.
50
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