A new study from the CDC’s National Center for Health Statistics shows that less than one-quarter of American adults meet the Physical Activity Guidelines. The CDC recommends 150 minutes to 300 minutes a week of moderate-intensity aerobic physical activity, or 75 minutes to 150 minutes a week of vigorous-intensity aerobic physical activity. They also recommend two days or more each week of muscle-strengthening activity. The new report found that only 24 percent of adults achieve those levels of exercise on a regular basis. A higher percentage of men than women meet those goals. And the report showed that the amount of exercise adults get goes down with age. Adults aged 65 or older were the least likely to meet the physical activity goals.