Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
One human hair can support 3 ounces.
191
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
Every year your body replaces 98% of your atoms.
119
An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
59
The human brain uses approximately as much energy as a 10 watt light bulb.
120
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18