Kimura is a Brazilian jiujitsu facility with a wide range of classes. The head instructor, Jean Kleber Freitas (a Watertown resident), teaches all classes alongside other instructors. The facility is roomy, with several areas, including a smaller room with exercise balls and a semi-detached area with columns and punching bags, as well as the central open area. In all, there is 2,500 square feet of mat and wall pads. There are 20 classes a week, with an average class size of 15; belts are used for the ranking system. Payments are monthly, and there is no enrollment fee. One-week free trials are offered.