According to ACSM/AHA guidelines, how often should healthy adults engage in aerobic physical activity?

The guidelines set forth by the American College of Sports Medicine (ACSM) and the American Heart Association (AHA) recommend that healthy adults engage in moderate-intensity aerobic physical activity for at least 150 minutes per week. This translates to a minimum of 30 minutes on 5 days a week, which is in line with the chosen response. Engaging in aerobic activity at this frequency and duration helps improve cardiovascular fitness, supports weight management, and reduces the risk of chronic diseases. This balanced approach encourages regular physical activity while being feasible for most individuals, promoting adherence to a consistent exercise routine.

The other options do not align with the recommended guidelines. For instance, engaging in only 20 minutes on 3 days a week would not meet the minimum required volume of activity. Similarly, 15 minutes on 4 days a week does not accumulate enough total minutes to reach the recommended level. Finally, while exercising for at least 1 hour daily can offer additional health benefits, it exceeds the minimum essential requirement outlined by the guidelines and might not be practical for everyone.