Here’s some more amazing body facts …

(1) Each square inch of human skin consists of 20 feet of blood vessels, equivalent to the width of a badminton court.

(2) An adult’s heart pumps nearly 4000 gallons of blood each day, roughly equivalent to 60 completely full bathtubs.

(3) Babies are born without kneecaps. They do not appear until 2-6 years of age.

(4) It takes the interaction of 72 different muscles to produce speech.

(5) Each lung has a total surface area of about 650 square feet.

(6) There are 2.5 trillion (give or take) red blood cells in your body at any moment.

(7) Relative to size, the strongest muscle in the body is the tongue.

(8) An average person drinks around 16,000 gallons of water in his lifetime.

(9) Around 45 miles of nerves run through our body.

(10) In 24 hours, the blood in the body travels a total of 12,000 miles – that’s four times the width of North America.