Termites work 24 hours per day and they do not sleep.
57
44% of kids watch television before they go to sleep.
106
Bats sleep 18-20 hours per day.
5
Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
The human brain is more active during sleep than during the day.
28
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13