Every day, your heart beats more than 100,000 times. That is, over 2.5 billion heartbeats in an average lifetime.

Your heart really works hard every day as it pumps blood to all the organs in your body. It pumps about 2,000 gallons every day. The heart will pump 1 million barrels of blood in an average lifetime.

On December 3, 1967, South African cardiac surgeon Christiaan Barnard transplanted a heart from a 25-year-old, who died in an accident, into a 53-year-old man named Louis Washansky.

You have two upper chambers (left and right atria) and two lower chambers (left and right ventricles). They're separated by a wall of muscle called the septum. The left ventricle is the largest, strongest chamber.

Apes have hearts that are closest to humans'. However, several research scientists think the pig might be the most promising.

A healthy heart makes a ‘lub-dub’ sound with each beat, which is a result of valves shutting on the blood inside the heart.

Contrary to what most people think, your heart is in the center, between your lungs. The heart’s lower portion is tilted to the left side, which is why you feel it beating a little more on that side.

A human heart is roughly the size of a large fist. The heart weighs about 280 to 340 gms in men and about 230 to 280 gms in women.

French physician Rene Laennec (1781-1826) invented the stethoscope as he felt i=uncomfortable to place his ear on his female patients' chests.

The vast system of blood vessels in a human body is more than 60,000 miles long. That’s how much your heart pumps blood through.