Hey whats Up, I heard JABB IS VERY GOOD, I work out at ULTFIT, IN EVANSTON its a good gym, run by a guy named Dave, His classes he teaches are Very tough and u get a great , great cardio workout, plus learn boxing techniques, its not a BOXING CARDIO CLASS, U do learn boxing, and the evening classes teach more technique, depends on what u are trying to accomplish?? any question just ask