Every human spent about half an hour as a single cell.
144
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Obsessive nose picking is called Rhinotillexomania.
101
Tigers can see 6 times better at night than humans.
305
Your fingernails grow faster in summer.
744
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
The average sperm cell swims at 8 inches per hour.
4