Final answer:
Adults should aim for 150 to 300 minutes of moderate-intensity or 75 to 150 minutes of vigorous-intensity aerobic activity weekly, plus muscle-strengthening activities on 2 or more days a week to realize health benefits.
Step-by-step explanation:
To realize health benefits of physical activity, adults should perform at least 150 minutes (2 hours and 30 minutes) to 300 minutes (5 hours) per week of moderate-intensity aerobic activity, or 75 minutes (1 hour and 15 minutes) to 150 minutes (2 hours and 30 minutes) per week of vigorous-intensity aerobic physical activity, or an equivalent combination of moderate- and vigorous-intensity aerobic activity. Engaging in physical activity beyond 300 minutes a week can result in additional health benefits. Adults should also engage in muscle-strengthening activities of at least moderate intensity that involve all major muscle groups on 2 or more days per week, as these activities provide additional health benefits.