The human brain doesn't stop developing until about 25 years old.
102
One human hair can support 3 ounces.
191
Your heart will pump about 212 million liters in its lifetime.
26
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
All the chemicals in a human body combined are worth about 6.25 euro (if sold separately).
266
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
22
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18