Cows can sleep standing up, but they can only dream lying down.
745
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
Termites work 24 hours per day and they do not sleep.
57
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15