Your body is creating and killing about 2.4 million red blood cells per second.
17
One human hair can support 3 ounces.
191
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
The average person's skin weighs twice as much as their brain.
131
The human brain doesn't stop developing until about 25 years old.
102
Enamel is hardest substance in the human body.
61
Chewing gum boosts your brain power.
285