Cardio Kickboxing (a.k.a. aerobic boxing, Aerobox, Boxercise, Boxaerobics and others) is a high-impact cardiovascular workout that blends elements of boxing, martial arts and traditional aerobics into a 30- to 60-minute exercise routine. Classes vary but generally feature a variety of punches, kicks, knee strikes and other self-defense moves interspersed with a bouncing "base" move. Some cardio-kickboxing classes spend at least part of the time kicking and punching weighted, padded targets or engaging in actual sparring. The class may also incorporate traditional exercises, such as jumping jacks, abdominal crunches, leg lifts and push-ups to create a total body workout.