Cardiovascular exercise can prolong life.Is this true?

 Heart is only good for so many beats,and that's it----

Don't waste time on exercise.Everything wears out eventually.Speeding up the heart does not make you live longer;it's like saying you extend the life of a car by driving faster.Want to live longer?Take a nap.

      Even though conventional wisdom says regular exercise is good for you,according to a number of sources too much exercise can be counterproductive and reduce longevity.