Coach Jarek Slagowski was born & raised in Poland. He started combat sports with Judo at age 14 and  Kyokushin Karate at age 17 and competed both in Judo and Kyokushin. Coach Jarek also trained kickboxing & boxing in Europe (Poland, Germany, The Netherlands) & US and he worked as a coach of the  Polish Kickboxing National Team. In 1989 Jarek came to the US  (New Jersey) and fought in All American Open Full Contact Karate Tournament in Rochester, NY and trained boxing at PAL Boxing Gym. He worked as Head Boxing Coach at ZN MMA & Boxing in New Jersey where he trained & coached many State, Diamond & Golden Gloves Champions, JO, Youth and Masters Division  boxers as well as kickboxing champions (TRINITY CUP). In 2014 Jarek and his wife Yvonne moved to Prescott, Arizona and opened Grind Boxing Gym in Prescott. Jarek trained many people who enjoy great boxing workouts but he also coached competitive boxers both in Senior and Masters Divisions. Jarek is a certified USA BOXING, INC coach and has over 40 years  experience in combat sports. Jarek is also Black Belt (GoDan) in Full Contact Karate and Black Belt (ShoDan) in Judo. Slagowski also worked as a Hand-to-Hand Combat instructor for Reconnaissance Battalion in Poland.