Based on data collected in 2011, the average American exercises 2.5 hours per week, according to Penn State News. The U.S. Centers for Disease Control and Prevention (CDC) recommends that adults between 18 and 64 years of age engage in four hours of physical activity each week.
Physical activity should include a combination of moderate and vigorous activity. According to a 2011 ABC News report, fewer than 20 percent of Americans get the prescribed amount of exercise, and 25 percent don't exercise at all.
Penn State News reports that teenagers engage in fitness activities for an average of 41 minutes per day, while those between the ages of 18 and 64 only exercise for 17 minutes daily. Those over age 65 get 13 minutes of physical activity per day.