Cows can sleep standing up, but they can only dream lying down.
745
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
47% of people have a nightmare at least once a month.
186
Termites work 24 hours per day and they do not sleep.
57
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15