Btone Fitness, Lexington

Boston Pilates Plus's high-intensity fitness classes, designed by fitness guru Sebastien Lagree, combine the traditional principles of Pilates with strength and cardio training to help students of all abilities sculpt toned physiques. On the brightly lit studio's gleaming wood floors, students buff up their bods on Megaformer machines, which target the upper and lower body using a system of springs, pulleys, and a strategically out-of-reach donut dangling on a fishing line. Students tone their muscles as joints and connective tissue breathe easy in the fat-burning, low-impact classes. For a more cardio-centric routine, try the barre blast class, which guides students through a low-impact workout that blends cardio, barre stretches, and strength training. Boot camps similarly focus on cardio, meeting twice a week for four weeks to romp through 30 minutes of intense exercise.