The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
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The strangers in your dreams are actually people that you've seen in real life.
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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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Termites work 24 hours per day and they do not sleep.
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The human brain is more active during sleep than during the day.
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Lack of water is the #1 trigger of daytime fatigue.
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The average person falls asleep in seven minutes.
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Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
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