Boll Family YMCA stopped in to show off the pound workout. They're offering free workout at Campus Martius Park every Tuesday from 6:30 pm to 7:30 pm. Check out the YMCA <a href="http://ymcadetroit.org/boll/">here</a>, and all Campus Martius events <a href="http://www.campusmartiuspark.org/events/(park)/316">here</a>.