A new baby usually deprives each of it's parents around 350-400 hours of sleep in the first year. That is one entire nights sleep per week, per parent.
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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.
15
You forget 90% of your dreams.
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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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If you hold farts in during the day, they'll just come out when you sleep.
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Cows can sleep standing up, but they can only dream lying down.
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Dieters who sleep more take off more fat that those who sleep less.
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47% of people have a nightmare at least once a month.
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