Along-distance runner wants to achieve his personal best time at the next cross country meet. what type of activity would be the most appropriate to focus on during training to accomplish this goal?
aerobic activities
muscle-strengthening activities
bone-strengthening activities
balance and stretching activities

the more fit you are, the faster the recovery. 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.

mayo clinic in rochester, minnesota;