Cardio circuits typically combine body weight exercise, plyometric and short bursts of aerobic activity into a circuit.
Similar to interval training, cardio circuits will challenge the cardiovascular system using weightless exercises in circuit fashion. Some exercises can still place significant load on the muscular system. This can have a hypertrophic effect (especially on deconditioned individuals). Cardio circuits are ideal for people wishing for mild muscular hypertrophy who need additional aerobics.