At Powerhouse Pilates, owners and instructors Annie and Victoria Maxwell lead exercisers through classes designed to strengthen and stabilize the core muscles, also known as the body's "powerhouse." Beyond traditional Pilates mat and reformer classes, the duo offers a handful of fitness sessions that put a more modern spin on the increasingly popular program. The Piloxing class—which has gained attention from NBC10 and Phillyburbs.com—keeps heart rates up by fusing together intervals of boxing, Pilates, and modern-dance moves. Standing barre classes, on the other hand, put the focus on balance and endurance by incorporating weights into a standing routine. Every class focuses on applying Pilates methods to everyday movements––a practice Powerhouse dubs "pre-habbing"––in order to train muscles to move properly and avoid injury.