47% of people have a nightmare at least once a month.
186
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
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
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The average person falls asleep in seven minutes.
115
The human brain is more active during sleep than during the day.
28
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29