Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
"Dysania" is the state of finding it hard getting up out of bed in the morning.
33
The average person falls asleep in seven minutes.
115
Bats sleep 18-20 hours per day.
5
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28
You forget 90% of your dreams.
256