DailyHerald(chicago): Watch your weight by counting calories, exercising more
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Extra weight affects your running/walking by placing more stress on your cardiac and respiratory systems, as well as your joints and muscles. At a heavier weight you are pounding the pavement with greater force and thereby increasing your risk of injury.
The link address is: http://www.dailyherald.com/search/main_story.asp?intID=37836140
