Threshold Martial Arts / Carlson Gracie Jiu-Jitsu in Mt Prospect, Illinois is a martial arts gym that focuses primarily on Muay Thai kickboxing training. Members consistently praise the supportive community atmosphere where experienced practitioners help newcomers feel comfortable while learning self-defense techniques and building confidence. The facility maintains a clean environment with quality equipment and offers multiple weekly classes taught by different instructors, providing varied teaching styles for both adults and youth programs.