Boxing Remixed! BOOMBOX is D.C.’s first music-driven, boxing-inspired group fitness studio. Our 50-minute signature class features shadowboxing, rounds on the Aqua Training Bag, and functional strength training to torch fat and build lean muscle while unleashing your inner badass. The BOOMBOX App is the easiest way to plan and schedule your next workout. Download the app to learn about special offers, view schedules, manage your classes and contact the studio!