Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
Termites work 24 hours per day and they do not sleep.
57
The human brain is more active during sleep than during the day.
28
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
You burn more calories sleeping than you do watching television.
348
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
Sea otters hold hands while sleeping so they don’t drift away from each other.
104