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
You burn more calories sleeping than you do watching television.
348
Cows can sleep standing up, but they can only dream lying down.
745
You forget 90% of your dreams.
256
Lack of water is the #1 trigger of daytime fatigue.
148
The human brain is more active during sleep than during the day.
28