Boxercise is an exercise class based on the training concepts boxers use to keep fit. Classes can take a variety of formats but a typical one may involve shadow-boxing, skipping, hitting pads, kicking punchbags, press-ups, shuttle-runs and sit-ups. Most boxercise classes are aimed at men and women of all ages and fitness standards. As no class involves the physical hitting of an opponent, it is a fun, challenging and safe workout..