Using a revamped Pilates machine known as the Megaformer, studio founder Meghann O’Leary promises to lengthen, strengthen, and tone your figure. Classes like Bootcamp Barre and Barre Body employ a combination of exercise techniques drawn from Pilates, strength training, cardio, and even ballet. These fifty-minute sessions blast a steady stream of chart-toppers to keep you (and your heart rate) pumped up throughout the full-body workout.