The SBG FIT app runs in association with Steel Box Gyms mobile outdoor training facility now offering online strength and conditioning services. Whether you are a seasoned athlete, an intermediate, a beginner or general keep fit enthusiast, SBG offers S & C advice for peak performance and injury prevention to keep you in the game or return to fitness. Steel Box Gyms encourages Functional Training outdoors with advice on working out to your full potential whilst on the move. No conventional gym required, make them optional.!