A Barry’s class can burn up 1,000 calories or more. It tones muscle, and boosts your resting metabolism, so you continue burning calories after the class is over. (We love that part too.) We combine weight training with cardio and alternate bursts of intense anaerobic exercise with recovery periods to keep the heart-rate elevated throughout the workout. You’ll burn more calories and increase your lean body mass, which in turn will raise your resting metabolic rate by up to 15 percent.