You forget 90% of your dreams.
256
Cows can sleep standing up, but they can only dream lying down.
745
You burn more calories sleeping than you do watching television.
348
Bats sleep 18-20 hours per day.
5
The average person falls asleep in seven minutes.
115
Honeybees never sleep.
276
The human brain is more active during sleep than during the day.
28