BJJ Gyms in Harvey, United States

Checkmat - Science Of Jiu-Jitsu

Science of Jiu Jitsu Academy is a Checkmat affiliate in Harvey, Louisiana, co-owned by black belts Marcus Dempsey and Zach Cothren. The academy offers comprehensive Brazilian Jiu-Jitsu training for all ages and skill levels, from fundamentals to advanced competition preparation. The academy's curriculum is built on systematic progression, starting with the 101 Fundamentals program that introduces students to the foundational skills of BJJ. Students learn the 4 Step Fighting Methodology, hierarchy of positions, and how to apply efficiency, leverage, balance, and timing. The program covers both gi and no-gi training, ensuring well-rounded grappling development. Head instructor Marcus Dempsey is a US Army Veteran with over 20 years of martial arts experience across multiple disciplines including BJJ, Taekwondo, Boxing, and Muay Thai. His competition achievements include IBJJF Open Black Belt Gold medals, ADCC Open medalist, Golden Gloves Welterweight Boxing Champion, and multiple Fight2Win black belt appearances. Co-owner Zach Cothren is an IBJJF No-Gi Worlds Black Belt Middleweight Gold Medalist with extensive competition experience and an undefeated amateur boxing record. Both instructors bring decades of combined teaching experience and a passion for developing students at all levels.