Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
You mostly breathe from only one nostril at a time!
75
The average human body contains enough fat to make seven bars of soap.
45
A fetus develops fingerprints at eighteen weeks!
32
Human teeth are almost as hard as rocks!
47
Your spit has a painkiller 6 times stronger than morphine. It contains a substance called opiorphin that is stronger than morphine.
39
The aorta, the largest artery in the body, is almost the diameter of a garden hose.
37