The Target Heart Rate Zone is represented by which percentage of your maximum heart rate? 050-70%
050-75%
O 60-80%
0 60-85%

Has to be 50-85 but depending on age ranges so the second one most likely.

i think it's the first one because doctors aren't the ones who get rid of the old needles. most of them time it's not even doctors who give you shots, it's nurses.