The skin on your lips is 200 times more sensitive than your fingertips.
345
The aorta, the largest artery in the body, is almost the diameter of a garden hose.
37
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
On average, women have always lived longer than men.
195
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
One out of 20 people have an extra rib.
66