Our brains have a negativity bias and will remember bad memories more than good ones.
15
A man's beard grows fastest when he anticipates sex.
239
The human sigh acts as a physiological reset button.
23
Obsessive nose picking is called Rhinotillexomania.
101
The average sperm cell swims at 8 inches per hour.
4
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
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15