Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Only humans shed emotional tears.
331
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
You can't tickle yourself.
29