if the heart quits beating when it gets old and tired?

Question: If the heart quits beating when it gets old and tired, when you work out the heart will beat faster, won't it give out earlyer in life.

Answers:
There's an old cliche that says.If you don't use, you lose it". Your heart needs to be challenged daily to keep it strong just as you need to do things to keep the mucles in your body strong.the heart is a muscle. Think of your leg muscles..the less they are used, the more the muscle will deteriorate (atrophy). If you never walk or run or go up/down stairs, your heart will not be challenged. Then, when you need to do these things your heart will be over worked and beat too hard and too fast for too long, not to mention shortness of breath (SOB) and possibly angina.

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