About 400 different kinds of microbes live on and in the human body.
-3
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
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
It has been shown that caffeine causes headaches when stopped suddenly and can cause morning headaches that are relieved by a dose of caffeine.
101
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
Only 1% of bacteria cause disease.
45