The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28
Honeybees never sleep.
276
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
Dieters who sleep more take off more fat that those who sleep less.
159
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23