On average, a human heart beats 100,000 times per day — that’s about 2.5 billion times in the average life span. The human heart actually starts beating in the womb after about 5 weeks. At this point, it beats about 80 times per minute — about 115,000 times per day. By week 9, a fetus’ heartbeat increases to 195 beats per minute — almost 281,000 beats per day. It gradually slows after that.
More Heart Facts:
There are about 6 quarts (5.6 liters) of blood in the human body. It makes a full circulation of the body three times per minute — that’s almost 12,000 miles (about 19,000 kilometers) of travel per day.
The system of blood vessels in the body is more than 60,000 miles (about 96,560 kilometers) long.
An adult, human heart is about the size of a fist and weighs 8 to 10 ounces (227 to 283 grams).