"Dysania" is the state of finding it hard getting up out of bed in the morning.
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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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The strangers in your dreams are actually people that you've seen in real life.
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Dieters who sleep more take off more fat that those who sleep less.
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Honeybees never sleep.
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One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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You forget 90% of your dreams.
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The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
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