Iron Clutch Fitness 1570 Holcomb Bridge Rd, Roswell, GA30076 With a full-size boxing ring and a heavy-bag room, Iron Clutch Fitness offers hardcore workouts. Its instructors use…More boxing and martial arts to get members fit. This is one of two locations for the fitness club. Both opened in January 2010. All instructors are either professional fighters or highly ranked amateurs. A coach at the Roswell location is the Georgia Golden Gloves Champion and is currently training for the Olympics. Techniques taught and used at the gym include mixed martial arts, kickboxing, self-defense, Brazilian Jiu Jitsu, cardio boxing, Muay Thai, Filipino martial arts and Spartan strength training. Programs for children age 6 and older are available for boxing and Jiu Jitsu.