If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
By the age of 60, most people have lost 50% of their taste buds.
17
The tongue is the strongest muscle in the human body.
50
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
The pupil of the eye expands as much as 45 percent when a person looks at something pleasing.
130
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Every hour one billion cells in the body must be replaced.
17
Ingrown toenails are hereditary.
15