John "Duza" Duczakowski is the Senior Master Instructor for the Jing-Shen Kuoshu Federation, which is a science integration of reality based applicable Martial Arts incorporating the styles of Boxing, Muay Thai Kickboxing, MMA, Jiu-Jitsu, Chin Na Joint Manipulation Grappling, Chi Sau Sticking Hands, Street Defensive Tactics, Escrima Stick Fighting, Knife and Gun Defense, as well as Universal Weapons, all applied with Kinesiology, Physiology and Spiral Dynamics. This concept allows for proven Principles and Philosophies that redefine Martial Arts for today’s level of Defensive Protection Tactics.  

John is also a Funtional Fitness Personal Trainer under the NSPA (National Strength Professionals Association) certification. John has been training and teaching Martial Arts for over 25 years now and over 15 years as a certified Fitness and Personal Training Specialist. He has conceived many advanced principles and exercises in fitness to yield faster results to help clients achieve their goals. John is also a certified Lifestyle Wellness Coach and can help with nutrition and well-being.

He has been featured on Planet X TV, KUSI News with Rod Luck, KGTV 10, and FOX 6 News showcasing Self Defense seminars. John was also an invited Instructor at the prestigious “GATHERING OF THE MASTERS” and “GATHERING OF THE EAGLES” Martial Arts Masters Expo 3 years in a row with Masters from all around the World. He also had the fortunate opportunity to help design “FIGHT CLUB”, a Martial Arts video game for Sony PLAYSTATION, in which he wore the caption suit and portrayed different fighting styles for many of the characters in the game.

John also worked directly with the SAY San Diego Foundation for Kids, various centers for abused women facilities, after-school programs, San Diego Police Department, Army, Navy and Marine personnel including Special Forces, Security companies and Corporate Wellness programs with SAIC. 

He specializes in Functional Fitness, Weight-loss, Plyometric Training, Strength and Conditioning, Balance and Agility Training, as well as  Reality-based Self-Defense and Protection, Security Conflict Intervention, Tactical Weapons Defense, and Women & Children Self Protection Seminars.

John has instructed the San Diego Community since 1997 for the Jing-Shen Kuoshu Federation as well as at The Sporting Club Aventine, Fitness Advantage, LA Fitness, Frog's ClubONE, Club La Jolla, USA Training Center, Backyard Fitness, Arena Martial Arts, Escondido Sport & Fitness, The House Fitness, B2BE Fit Sports and Wellness, VictoryMMA, UFC gyms in Pt Loma and Mission Valley locations, and Olympic Training Academy. John is also a licensed Corner-man Coach and MMA Judge for the Gladiator Challenge and Cali Cage Wars Organizations.

"I strive to help people achieve their goals in Fitness and Martial Arts to better themselves Physically, Mentally, and Spiritually while teaching a Way of Life and to protect themselves from any conflict or harm."

"Be a Survivor, Not a Victim..."

"Fight Hard to Win"

"Can't" isn't a word in your Vocabulary"


Register for Lessons with Coach Duza HERE!