Read the text. Many people divide exercise into one of two categories: strength training or aerobic. Strength training refers to activity that uses weights or a person's body weight to strengthen muscle, while aerobic exercise refers to activity that increases the heart rate for an extended period of time. Athletic trainers often advise people to wait at least forty-eight hours between strength training workouts, to give their muscles time to heal. Aerobic workouts, on the other hand, can be done more frequently. Which organizational structure does this text primarily use?
The text primarily uses a compare and contrast organizational structure. It presents the categories of exercise (strength training and aerobic) and compares them by describing their definitions, recommended frequency, and effects on muscles.
