Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The human brain doesn't stop developing until about 25 years old.
102
Our Right Lungs takes more air than our left lung.
194
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Held in farts enter your bloodstream and are bad for your body.
26
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Your body is creating and killing about 2.4 million red blood cells per second.
17
There are about 1,400 different species of bacteria in your belly button.
10