The american heart association suggests that you see a physician before exercising if you a. you perspire excessively. b. you are thirty years old. c. you take medicine for blood pressure. d. regularly perform tasks like walking a dog and gardening.

C.  you take medicine for blood pressure.

Explanation:

According to the American Heart Association one should see the physician before performing the exercise. This is because of the fact that a patient of problem of blood pressure which is taking regular medicine is prone to high risk of heart disease. The overexercise can labor the functioning of heart which may lead to hypertension or heart attack.