You forget 90% of your dreams.
256
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
Dieters who sleep more take off more fat that those who sleep less.
159
Bats sleep 18-20 hours per day.
5
Lack of water is the #1 trigger of daytime fatigue.
148
The average person falls asleep in seven minutes.
115
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13