Blood supplies oxygen and nutrients to the body through blood vessels that are arranged in a firmer network. And when it returns to the heart, it also carries away the body's waste.
The human body will die if it does not receive oxygen and nutrients for even one minute, so the heart can never rest. Even when we are asleep, the heart never stops working, 24 hours a day, 7 days a week.
The secret to this heartbeat lies in the heart muscle. The muscles of the heart are specially designed to be stronger than the muscles of other parts of the body. This special muscle, which is unique to the heart, pushes blood out with great force through regular contractions. This muscle movement is what keeps the heart moving.
Another wonderful feature of the heart is that it does not move under orders from the brain. Normally, all the muscles in the body move under the command of the brain, but in the case of the heart, the contraction of the muscles is carried out by a unique mechanism in the heart that has nothing to do with the brain. The heart usually contracts 60 to 80 times per minute.