Health authorities have recommended moderate-to-vigorous aerobic exercise for at least 2.5 hours per week along with muscle-strengthening exercises. According to the CDC (2013), what percentage of American adults meets the requirements for aerobic and strength training, respectively?
a. 75% for aerobic; 75% for strength
b. 75% for aerobic; 50% for strength
c. 50% for aerobic; 50% for strength
d. 50% for aerobic; 20% for strength
Answer is d. 50% for aerobic; 20% for strength
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