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1460 n halsted st ste 501 chicago il form
Name: period: target heart rate (thr) chart my mhr is (220 age). my thr range is (mhr x 60% for low thr and mhr x 80% for high thr). my tensecond thr range is (divide the above two answers by 6 to find your tensecond target heart rate range). use...
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