Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
People who sleep late have more mental stamina and can outperform early risers.
33
Bats sleep 18-20 hours per day.
5
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22