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Answer:
People would aim their Target Heart Rate for at least 15 - 20 minutes workout time, and ideally 35 - 45 minutes. If someone is a beginner, they would normally start from 65% - 70% of their maximum heart rate and gradually increase the intensity.
So the answer is 12.
People maintain a target Heart Rate for an average of 12 minutes.
What is the target heart rate?
The target heart rate is 50 to 85% of the maximum heart rate. It should be maintained during exercise.
How much time should the target heart rate be maintained?
Ideally, target heart rate should be maintained for 35 - 45 minutes during the exercise.
However, people maintain the target heart rate for 15-20 minutes.
To learn more about heart rate, target Heart Rate, and exercise here,
https://brainly.com/question/13128077
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