Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
On average, there's 100 billion neurons in the human brain.
83
Smokers get ten times more wrinkles than non-smokers.
171
The smallest human penis ever recorded was just 5/8 of an inch long!
77
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139