There are about 1,400 different species of bacteria in your belly button.
10
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
32