Making your body feel lighter, becoming more agile on your feet and increasing your stamina requires the kind of lower body strength that comes with better muscle and tendon control. And, of course, stronger muscles and tendons. Step Up is a month-long challenge that incrementally builds up the kind of strength, control and coordination you need in order to feel light on your feet. Take the challenge and see just how different you will feel by the end of the thirty-day period.