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
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Pain occurs when sounds are above 130 db.
124
A man's beard grows fastest when he anticipates sex.
239
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Gorillas can catch human colds and other illnesses.
205
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266