Ten More Fascinating Body Facts

From the age of thirty, humans gradually begin to shrink in size.
Most people lose fifty per cent of their taste buds by the time they reach age sixty.
Your body contains enough iron to make a spike strong enough to hold your weight.
The amount of carbon in the human body is enough to fill about 9,000 'lead' pencils.
One square inch of human skin contains 625 sweat glands.
The surface area of a human lung is equal to that of a tennis court.
Give a tennis ball a hard squeeze and you use about the same amount of force your heart uses to pump blood around your body.
When you blush, your stomach lining also reddens.
The human body has less muscles in it than a caterpillar.
Your eyes blink enough times in a lifetime to see blackness for over a year.