Respuesta :
Karate, because this activity is less about strength and more about your stamina which is an important part of you cardiorespiratory health. Rollerading also focusses on stamina, but it's less intense than karate.
Alex's doctor should encourage him to participate in karate.
How to increase his cardiorespiratory health?
You can improve your cardiopulmonary endurance by exercising to increase your heart rate and breathing rate, or by doing aerobic exercise.
According to many experts, aerobic training is the most important part of physical fitness. To achieve cardiovascular endurance, he needs to do aerobic exercise 30 minutes a day, 3-7 days a week.
learn more about cardiorespiratory health here
https://brainly.com/question/12372224
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