What is Circuit Training? If you're not sure what circuit training is, it's a form of body conditioning that involves several exercises done in a circuit. Those exercises are designed to target strength building and muscular endurance. They involve high intensity aerobics as well as resistance training. Exercises to include in a circuit training workout Circuit training is a great way to build up your cardiovascular health. It is an ideal workout for any fitness level. You can design your own circuit and work your individual muscle groups. If you are new to circuit training, start with a warm-up. Your warm-up should include five minutes of basic stretches and very light aerobic activity. This will help you avoid injuries. You should also do some stretching to loosen up your muscles before you begin your workout. Stretching is not only good for your flexibility, but it can be used as a warm-up for cardio. Depending on your fitness level, you may want to do an easy cool