Why Can’t The Heart Ever Rest?
The non-stop working pump is an amazing organ of the human body. Even when you are sleeping it goes on pumping blood to reach every part of your body to keep you alive and healthy.
With every beat of the heart, one hundred cubic centimeters of blood is pumped out. In one day about 10,000 liters of blood is pumped through our blood vessels. Which means that in an average life, a heart pumps about 250,000,000 liters of blood! And it never stops to rest!
What we call a heart-beat is one contracting and relaxing of the heart. During the contracting purified blood is pumped out, during the relaxing impure blood from the parts of body enters.