Those who get out of bed by 7am are more likely to be thinner and happier.
20
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
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 harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
The strangers in your dreams are actually people that you've seen in real life.
50
Bats sleep 18-20 hours per day.
5
The average cat sleeps about 2/3 of the day.
203