Karen Voight: Burn & Firm - Circuit Training
Circuit training is the best way to slim down and build muscles at the  same time. By kicking up your heart rate and having more muscle on your body, you can  enjoy what you eat and still control your weight   Here are a variety of circuit training  programs designed to get every part of your body in terrific shape:  Cardio Circuits: are fun and motivating ways to boost your energy and burn up fat. Strength Training Circuits: Firm and build more muscle so your body eats up calories  around the clock.  You’ll train your upper body with weights and sculpt your lower body  without weights for a lean, well-defined look. With all these different circuits to choose from, you’ll zero in on what your body needs  have workouts that fit your schedule and never get bored.