The Firm and Burn Workout

How This Workout Works

Boost your flab-melting power right now as you shape sexy muscles. "To really stoke your engine and help you lose fat faster, this workout ramps up the intensity of strength training with blasts of cardio," says Zen Nguyen, corporate trainer for 24 Hour Fitness gyms, who teamed with the chain's head of fitness, Ingrid Owen, to create this speedy sculpting routine. You'll torch up to 10 calories a minute while targeting virtually every area of your body. (Our five testers lost an average of 8.2 inches all over!) Simply do these moves in a circuit, performing the Cross Jack, shown on the following slide, after each toner, three times a week on nonconsecutive days. Repeat the circuit once or twice. Mix these strength-and-sweat sessions with the "Cardio: Easy as 1, 2, 3!" formula for a hot body and a smokin' metabolism.