187 to achieve the maximum benefit for the heart when exercising, the heart rate (in beats per minute) should be in the target heart rate zone. the lower limit of this zone is found by taking 70% of the difference between 220 and the age of the person. the upper limit is found by using 85% of the difference. complete parts a through
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187 to achieve the maximum benefit for the heart when exercising, the heart rate (in beats per minut...
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