Your body is creating and killing about 2.4 million red blood cells per second.
17
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
If you hold farts in during the day, they'll just come out when you sleep.
16
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
The human body contains over a billion miles of DNA.
147
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89