The strangers in your dreams are actually people that you've seen in real life.
50
You can reschedule your sleeping pattern by not eating 12-16 hours before you want to be awake. Upon eating after this time period, your internal clock will reset to a new day, with the time of your first meal being interpreted as "morning".
11
The human brain is more active during sleep than during the day.
28
Cows can sleep standing up, but they can only dream lying down.
745
You forget 90% of your dreams.
256
Bats sleep 18-20 hours per day.
5