Bats sleep 18-20 hours per day.
5
People who sleep late have more mental stamina and can outperform early risers.
33
Lack of water is the #1 trigger of daytime fatigue.
148
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
You burn more calories sleeping than you do watching television.
348
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34