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What is target heart rate used for?

User Bricks
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You can use your target heart rate to know how hard or easy to exercise to gain the most aerobic (requiring the presence of air or free oxygen for life) benefit from your workout.
hope this helps x
User Lumio
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Answer:

You can use your target heart rate to know how hard to exercise to gain the most aerobic benefit from your workout. You can exercise within your target heart rate to either maintain or raise your aerobic fitness level.

Step-by-step explanation:

User Kuokongqingyun
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