The strangers in your dreams are actually people that you've seen in real life.
50
47% of people have a nightmare at least once a month.
186
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
Cows can sleep standing up, but they can only dream lying down.
745
If you hold farts in during the day, they'll just come out when you sleep.
16
The human brain is more active during sleep than during the day.
28
44% of kids watch television before they go to sleep.
106
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212