It takes 17 muscles to smile, 43 to frown.
65
About 400 different kinds of microbes live on and in the human body.
-3
You see your nose at all times, your brain just chooses to ignore it.
30
During a typical human life span, the human heart will beat approximately 2.5 billion times.
21
By the age of 60, most people have lost 50% of their taste buds.
17
The human body contains over a billion miles of DNA.
147
You're born with 300 bones, but when you get to be an adult, you only have 206!
17
