“Regular physical activity helps with weight control; however, physical activity also provides many health benefits even without weight loss. Regular physical activity helps prevent early death and chronic diseases such as coronary heart disease, stroke, type 2 diabetes, depression, and some types of cancer. The 2008 Physical Activity Guidelines for Americans concluded that adults should engage in aerobic physical activity of moderate intensity (e.g., brisk walking) for at least 150 minutes per week, or of vigorous intensity (e.g., jogging) for at least 75 minutes per week, or an equivalent combination, in periods lasting at least 10 minutes each to gain substantial health benefits. One third of U.S. adults, however, report no aerobic physical activity during their leisure time and less than half report levels of activity that meet the current aerobic physical activity guideline. Walking is the most commonly reported physical activity among U.S. adults overall and also the most frequently reported activity among adults who meet physical activity guidelines. Most adults are physically able to walk and for many persons with disabilities, walking or moving with assistive devices is also possible. Walking is a physical activity most persons can do because it does not require a special skill or special facilities, and can be done indoors or outdoors, alone or with others. Walking also can be undertaken for multiple purposes, such as for leisure-time exercise or transportation.”
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