The strangers in your dreams are actually people that you've seen in real life.
50
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.
23
The average cat sleeps about 2/3 of the day.
203
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
You burn more calories sleeping than you do watching television.
348
You forget 90% of your dreams.
256