Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
People who sleep late have more mental stamina and can outperform early risers.
33
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
Cows can sleep standing up, but they can only dream lying down.
745
44% of kids watch television before they go to sleep.
106