Your body is creating and killing about 2.4 million red blood cells per second.
17
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
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 your DNA was stretched out it would reach to the moon 6,000 times.
256
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
If you hold farts in during the day, they'll just come out when you sleep.
16