Your skin is actually an organ.
88
We blink 25 times a minute.
51
Every year your body replaces 98% of your atoms.
119
Cigarette smoke contains 4,800 chemicals, 69 of which cause cancer.
145
In the average lifetime a person will breath in about 44 pounds of dust.
21
You mostly breathe from only one nostril at a time!
75
It takes 17 muscles to smile, 43 to frown.
65
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15