Trying to lose weight? Ditch calorie-rich rewards after exercise

Credit: Reuters/Mike Blake People walk and jog at Torrey Pines State Park in San Diego, California, November 14, 2012. Although fitness has indisputable health benefits, it takes a lot of walking or running to burn off the calories in a donut. "There's a war between exercise and nutrition in our heads," said American Council on Exercise spokesperson Jonathan Ross.