There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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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
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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44% of kids watch television before they go to sleep.
106
If you hold farts in during the day, they'll just come out when you sleep.
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You burn more calories sleeping than you do watching television.
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Dieters who sleep more take off more fat that those who sleep less.
159
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
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