If you are bitten by a poisonous snake, and fail to receive medical attention, you still have a 50% chance of survival.
28
Every hour one billion cells in the body must be replaced.
17
It takes 17 muscles to smile, 43 to frown.
65
If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
The human heart creates enough pressure to squirt blood 30 ft.
37
Those who get out of bed by 7am are more likely to be thinner and happier.
20