The health benefits of physical activity are well established. Physical activity contributes to a lower risk of coronary heart disease, as well as a variety of other chronic diseases including hypertension, non-insulin-dependent diabetes (Type 2), osteoarthritis, and osteoporosis. To promote physical activity, more environmental and policy strategies are needed. Examples of environmental and policy approaches to increase physical activity include walking and bicycle trails, liability legislation, zoning and land use, mall walking programs, building construction that encourages physical activity, policies and incentives promoting physical activity during the workday, and policies requiring comprehensive school physical health education programs.