How many minutes must the target heart rate be maintained in order for aerobic exercise to be beneficial? five six twelve twenty

twelve

Explanation:

People would aim their Target Heart Rate for at least 15 - 20 minutes [¼ - ⅓ hour] workout time, and ideally 35 - 45 minutes [7\12 - ¾ hour]. If someone is a beginner, they would normally start from 65% - 70% of his\her maximum heart rate and gradually increase the intensity.

changing it is a matter of considerable debate. some people are just lucky. they inherited genes that promote a faster metabolism and can eat more than others without gaining weight.