If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
One human hair can support 3 ounces.
191
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
22
If you are cold you are more likely to be hungry because you use energy to keep warm.
144
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
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
Your body is creating and killing about 2.4 million red blood cells per second.
17