Ur heart is about the size of ur two fist & weighs only half a pound.
At it's normal rate of speed the human heart beats about seventy times a minute.
The human heart pumps blood through tiny capillaries so numerous they would stretch two & a half times round the earth, if placed end to end.
It pumps 5 ltrs of blood every 60 secs during exercise.
While ur heart is at work, it's own muscle cell re busy selecting the materials they need for their own growth & repairs.
The human heart never stop working as long as u re alive. It repairs itself, while working, if damaged by disease.
Under the stress of some acute illiness, it ll keep on working day after day pumping at two or three times it's normal speed to help the body overcome some serious emergency.
The normal heartll beat for about eighty yrs or more without even losing a few minutes for repairs.
No organ works as long and as hard as the heart.
No machine made by man is as durable or efficient as the human heart.
Only the hand of the Master Creator Himself could ve designed such a marvelous organ.

A simple 'I'm breaking up with you' can shatter the heart.