MMA Classes & Boxing Gym In North York (Toronto) Grant MMA & Boxing Gym is North York’s top choice of martial arts gyms boasting exceptional programs taught by the most accomplished coaches for all levels of fitness and ability. Whether you’re a beginner or an experienced martial artist, our diverse range of classes, including Boxing, Muay Thai, strength conditioning, and specialized kids classes, offers something for everyone. Led by accomplished coaches, our programs are designed to help you achieve your fitness and martial arts goals in a supportive and dynamic environment.