It is said that the heart start beating in the 4th week after pregnancy in fetus, and that it never stops until death. Does heart ever rest? I have read that heart rests between beats when it is being filled with blood. Perhaps it’s true but I don’t think that heart is ever in complete rest. When the heart is pumping blood, it is in a state of great stress. But while contracting it is doing less work than during pumping of blood.
If we see diastole it will look like a rest for the heart .the heart need it after systole for nutrition .Idon’t mean it take long rest then it work again , but less than second that what heart needs for its continuation
the diastolic period is longer than the systolic that means rest is vital for heart