People who sleep late have more mental stamina and can outperform early risers.
33
Bats sleep 18-20 hours per day.
5
44% of kids watch television before they go to sleep.
106
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
"Dysania" is the state of finding it hard getting up out of bed in the morning.
33
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28