North Andover Jiu Jitsu in North Andover, Massachusetts is a martial arts gym that offers MMA, boxing, and jiu-jitsu training with a focus on sport-oriented techniques. The facility features spacious mats, a clean training environment, and classes that dive straight into martial arts instruction without warm-up activities, making it better suited for those with some prior experience. While most students praise the knowledgeable instruction and competitive atmosphere, there are mixed opinions about the teaching style and customer service approach.