Warming up before exercise and cooling down and stretching after it are important parts of an exercise programme. If you skip the cool-down portion of exercise, blood can pool in the exercised parts of the body and diminish the return of blood to the heart. Correct answer: D Cooling down helps your heart rate and breathing to return to normal, helps avoid fainting or dizziness, which can result from blood pooling in the large muscles of the legs when vigorous activity is stopped suddenly, helps prevent muscle soreness...