A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
If you hold farts in during the day, they'll just come out when you sleep.
16
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
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
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
44% of kids watch television before they go to sleep.
106
You burn more calories sleeping than you do watching television.
348
Bats sleep 18-20 hours per day.
5