Kosakowski's Practical Self Defense Training Center, located in Waterbury, Connecticut, and surrounding areas, was established in 2015. The center offers a diverse range of martial arts disciplines, including Filipino Martial Arts, Chinese Martial Arts, and Mixed Martial Arts, among others. Focused on promoting self-defense and fitness, they welcome all interested individuals to their regular weekly group classes. They also feature a holistic product line and provide professional massage therapy services designed to alleviate stress and tension.