The Incredible Human Heart
The heart of a human embryo starts beating approximately three weeks after the beginning of its development. This tiny, yet powerful organ is one of the first to form and function in the human body. Throughout a person’s life, the heart never rests — it beats around 100,000 times per day, pumping roughly 9,000 liters (about 2,400 gallons) of blood daily.
The human heart is roughly the size of a clenched fist but is strong enough to send blood through a network of vessels that could stretch over 100,000 kilometers (about 60,000 miles). Maintaining a healthy heart is crucial for overall well-being, as this vital organ supplies oxygen and nutrients to every part of the body.