The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
112
A person can live without food for about a month, but only about a week without water.
156
If your DNA was stretched out it would reach to the moon 6,000 times.
256
Our eyes are always the same size from birth, but our nose and ears never stop growing.
269
Your body is creating and killing about 2.4 million red blood cells per second.
17
Held in farts enter your bloodstream and are bad for your body.
26
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
There are about 1,400 different species of bacteria in your belly button.
10