The average adult heart beats 72 times a minute;100,000 times a day; 3,600,000
times a year; and 2.5 billion times during a lifetime.The volume of blood pumped by the heart can vary over a wide range, from five to 30 liters per minute.
Every day, the heart creates enough energy to drive a truck 20 miles. In a lifetime, that is equivalent to driving to the moon and back.
Because the heart has its own electrical impulse, it can continue to beat even when separated from the body, as long as it has an adequate supply of oxygen.
The heart pumps blood to almost all of the body’s 75 trillion cells. Only the corneas receive no blood supply.
The “thump-thump” of a heartbeat is the sound made by the four valves of the heart closing.
Cocaine affects the heart’s electrical activity and causes spasm of the arteries, which can lead to a heart attack or stroke, even in healthy people.