If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
One human hair can support 3 ounces.
191
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
