About Underground Fitness

Underground Fitness was born in 2020. The gym offers an array of equipment to help you achieve your goals. Located in the heart of San Francisco, Underground differs from other gyms by offering complete privacy to our members. Our gym is fitted with state-of-the-art biometric scanners that ensure you are the only person using the gym. On top of that, Underground offers group classes including but not limited to: Boxing, MMA, Women's Self-Defense, Children's Self-Defense, and many more.