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
If you hold farts in during the day, they'll just come out when you sleep.
16
Honeybees never sleep.
276
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
44% of kids watch television before they go to sleep.
106
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29