Bats sleep 18-20 hours per day.
5
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
"Dysania" is the state of finding it hard getting up out of bed in the morning.
33
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
You burn more calories sleeping than you do watching television.
348
Sleeping on the job is acceptable in Japan. It is viewed as exhaustion from working hard. Some people fake it to look committed to their job.
57
The strangers in your dreams are actually people that you've seen in real life.
50