Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
The average person falls asleep in seven minutes.
115
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
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34