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OpenStudy (teame):

True or false? Strengthening your heart muscle means your heart will work harder while at rest

OpenStudy (banjoman):

true

OpenStudy (jp777):

false for future people. (strengthening your heart muscle allows your heart to perform easier pumping while at rest and in action) For example, if you make your lung muscles (diaphragm) stronger, you will be able to hold your breath underwater longer, not shorter.

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