Final answer:
For optimal health, adults should do 150 to 300 minutes of moderate-intensity or 75 to 150 minutes of vigorous-intensity aerobic activity weekly, and muscle-strengthening activities on 2 or more days per week.
Step-by-step explanation:
Recommendations for Moderate Physical Activity
The American College of Sports Medicine, in line with the 2018 Physical Activity Guidelines for Americans, recommends that adults engage in 150 to 300 minutes (2 hours and 30 minutes to 5 hours) of moderate-intensity aerobic activity per week, or 75 to 150 minutes (1 hour and 15 minutes to 2 hours and 30 minutes) of vigorous-intensity aerobic physical activity, or an equivalent combination of both.
For optimal health benefits, it is also suggested that these activities be spread throughout the week. Additionally, adults should participate in muscle-strengthening activities that involve all major muscle groups on 2 or more days per week. Moderate-intensity activities are those in which a person can talk but not sing, and vigorous-intensity activities are those in which a person can say only a few words without stopping to breathe.