Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
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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.
194
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The human brain is more active during sleep than during the day.
28
You burn more calories sleeping than you do watching television.
348
Termites work 24 hours per day and they do not sleep.
57
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28