Fitness & Yoga, Fitness Studios/Gyms Rooftop Fitness is a fitness studiio offering BJJ, MMA, Muay Thai and weight loss training classes. http://www.rooftopfitness.com.hk/ Room J, 2/F, Mong Kok Building, 97 Mong Kok Road +852 2389 6870 f https://www.facebook.com/rooftopfitness/ rooftopfitness@gmail.com