Answer:
The answer is Number of beats per minute the heart drops after exercise. Your heart rate drops most sharply in the first minute after you stop exercising; it should then fall about 20 beats a minute—a drop of less than 12 beats a minute is considered abnormal. This “recovery heart rate” is measured as part of an exercise stress test.
Explanation:
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A. Distractions, because it is distracting him from running.