The Many Ways Running a Marathon Destroys Your Body

Running a 26.2-mile marathon puts your body through hell. Even with the proper training, marathoners stagger across the finish line with ravaged joints and shredded muscles — not to mention chafing in embarrassing places. A recent study looked at the kidneys of marathon runners before and shortly after they finished a run and found evidence consistent with acute kidney injuries. The drastic steps our bodies take to keep our legs moving over distances results in a flood of chemicals into o