The strangers in your dreams are actually people that you've seen in real life.
50
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
Bats sleep 18-20 hours per day.
5
The average person falls asleep in seven minutes.
115
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
44% of kids watch television before they go to sleep.
106