Professional Training, Martial Arts and Self Defense Classes In Jacksonville, Florida

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Who We Are


UndergrounD Fitness and Self Defense is the worlds first Montessori Martial Arts Academy. We are here to offer an open minded, alternative to your typical martial arts training. While we are rooted in over 3000 years of martial arts history, we believe every student trains differently to get to their end goal, and we are here to help.


Located in Jacksonville, Florida, the founding members have been martial artists their entire lives but hadn’t dreamed of running a school ourselves. When the events of COVID-19 began to affect the world, everyone retreated inward; everyone except us. We realized that we could pivot through this situation and reach outwards! With the age of virtual training forced upon us, we formed a core group of students and instructors and continued teaching online. From the garage turned dojo, we kept going right through quarantine!

 

There have been many challenges throughout our growth since then. Still, with the integrated support of the instructors, owners, families, and students, we have been able to persevere and prosper. Throughout these events, our character and grit have been tested. We are proud to continue preserving old martial traditions while using an innovative curriculum to provide a unique training opportunity for anyone, anywhere!

Two Men Doing A Sparring — Jacksonville, FL — Underground Fitness and Self Defense

We look forward to training with you and your family and friends. Together, we can build a better world by strengthening our minds, bodies, and characters. Best wishes on your journey!

Significance of Our Logo

Our logo is based on the philosophy of the Yin Yang, which represents a world of opposites. It explores the concept that we strive for balance, realizing there are elements of each section present in every situation. To be whole, we must train all 3 areas. The areas we focus on are the mind, body, and character, with the SELF as the union of all three influences combined. The UndergrounD Eyes represent your intensity and unlimited potential through training.

Check out a recent podcast one of our teachers, Master Black Belt Benjamin LaMasters, was featured on!

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Testimonials

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    Our 4 year old is thriving in this class. He is an active young man and this class matches his energy and it is teaching him respect, kindness and understanding all at the same time. Master Ben and Master William have the perfect balance...making class fun and teaching the lessons to make my son respectful, kind and a confident young man. I would recommend this class to anyone. 


    - Madeleine B.

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    Absolutely love Master Williams and Master Ben. They are so patient with my son (4 yo) and work so well with kids. My son looks forward to “ninja training” every week. They are so good at teaching and being serious about martial arts but keeping it fun at the same time. Highly recommend!! 


    - Taylor F.


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    Great Martial Arts school with amazing instructors! My son and daughter have been training with them for quite some time. With in person and online classes it is convenient and allows the children to learn and train with ease throughout the week 


    - Homa K.

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    Excellence in teaching and mentoring.… such a pleasure to watch and to hear all the positive comments after a lesson is such a gift. Would definitely recommend to everyone of any age, whether taking classes online or in person. Improve your life for the better from day one!

    Something so Valuable You can always take with you in any situation. 


    - Claudia B.

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    Master LaMasters did a fun, informative and useful mini-workshop for my company at a virtual/online in-service. As the Owner of Right at Home, an in-home care company, I want to help my Caregivers and all employees stay fit, calm, safe and well, and this session delivered! Thank you, UndergrounD Fitness & Self Defense!


    - Kimberley Schafer

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