Sam has been working to improve his muscular fitness. he jumps rope and trains with weights. what will most likely be the result of sam's efforts

C. increased bone density for PLATO users

Explanation:

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the more fit you are, the faster the recovery. your heart rate drops most sharply in the first minute after you stop exercising; it should then fall about 20 beats a minute—a drop of less than 12 beats a minute is considered abnormal. this “recovery heart rate” is measured as part of an exercise stress test.