You inhale about 700,000 of your own skin flakes each day.
29
You mostly breathe from only one nostril at a time!
75
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
You're born with 300 bones, but when you get to be an adult, you only have 206!
17
There's 100 trillion good bacteria living in your body.
17
Most dreams last only 5 to 20 minutes.
79
Fingernails grow nearly 4 times faster than toenails.
31