The human brain is insensitive to pain.
76
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
21
If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
The average office desk has 400 times more bacteria than a toilet.
22
Those who get out of bed by 7am are more likely to be thinner and happier.
20
According to one report, it would take 800 marijuana joints to kill a person - but the cause of death would be carbon monoxide poisoning.
176
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252
Fidgeting can burn about 350 calories a day.
201