One human hair can support 3 ounces.
191
The human eye blinks an average of 4,200,000 times a year.
233
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
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
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346