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A participant leaps off a platform in an obstacle called Walk the Plank. Over 15,000 people signed up for the Mount St. Louis Tuff Mudder, a military-style obstacle course designed to test participants’ endurance, strength and heart, August 18, 2012. (Galit Rodan/The Globe and Mail) @galit_r #tuffmudder #mudder #extreme #race #photojournalism (Taken with Instagram)