Obsessive nose picking is called Rhinotillexomania.
101
It takes about 20 seconds for a red blood cell to circle the whole body.
102
If the human eye was a digital camera, it would have 576 megapixels.
25
Pain occurs when sounds are above 130 db.
124
A man's beard grows fastest when he anticipates sex.
239
Human hair and fingernails continue to grow after death.
7
Tigers can see 6 times better at night than humans.
305
Early American humans hunted car-size armadillos and used their shells for houses.
12