Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Within three days of death, the enzymes that once digested your food begin to eat you.
22
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46
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
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
Held in farts enter your bloodstream and are bad for your body.
26
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197