It takes 17 muscles to smile, 43 to frown.
65
A man once sued his doctor because he survived his cancer longer than the doctor predicted.
74
On average, someone in the US suffers a stroke every 40 seconds; someone dies every 3 minutes from stroke.
57
The average human body contains enough iron to make a small nail.
50
About 400 different kinds of microbes live on and in the human body.
-3
Chocolate, sex, and laughter are all important for a healthy brain.
37
Only 1% of bacteria cause disease in humans!
2