Every year your body replaces 98% of your atoms.
119
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Poor eyesight (myopia) is associated with higher IQ.
232
One human hair can support 3 ounces.
191
The human brain doesn't stop developing until about 25 years old.
102
The human body contains over a billion miles of DNA.
147
The average person's skin weighs twice as much as their brain.
131