Cows can sleep standing up, but they can only dream lying down.
745
You forget 90% of your dreams.
256
44% of kids watch television before they go to sleep.
106
"Dysania" is the state of finding it hard getting up out of bed in the morning.
33
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
Dieters who sleep more take off more fat that those who sleep less.
159
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
Bats sleep 18-20 hours per day.
5