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
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
There's 100 trillion good bacteria living in your body.
17
A human being loses an average of 40 to 100 strands of hair a day.
133
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
22
A person can live without food for about a month, but only about a week without water.
156
There are about 1,400 different species of bacteria in your belly button.
10
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55