Answer :
Answer:
The correct answer would be Jeff
Explanation:
Jeff's high end of his target heart rate zone is lower than everyone else. This means that he has to work the hardest to get his heart rate to that point. Since he had an average heart rate of 172 and the limit of his target heart rate zone is 175, he was inherently working the hardest.
Based on this information, Mike worked at the highest intensity level.
What is the Target heart rate?
The target heart rate may be defined as a range of numbers that illustrates how fast your heart should be beating when you are exercising or doing any physical activity.
Based on the information given above, the target heart rate of Mike is maximum with respect to others in the same sense.
Therefore, Mike worked at the highest intensity level.
To learn more about Target heart rate, refer to the link:
https://brainly.com/question/19153235
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