Shinmyoken Dojo

Westchester | New York

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Monday, February 27, 2023

Mushashin: Developing The Warrior's Heart

Over the course of training, one hears various expressions and statements regarding our movement, with one of them being the importance of the warrior’s heart- mushashin.

Yes, martial arts techniques are important, yes one needs to know the forms and the kata, yes one need to put the time in training, but without the correct heart- the warrior’s heart the budo journey will amount to nothing.

Having the correct heart is the most important aspect of the martial arts, everything else can be learned.

So how do we make sure we have this warrior heart?

The training cultivates and develops it, being able to stick with the training, and work through the draining despite personal desires.

Showing up each week for class.

Yet, built on this is the core of the warrior’s heart, the ability to have an ideal that is unchangeable.

A commitment to the training, that no matter what happens, one will keep going and keep training.

Commit 100% to the training.

Nowhere does the warrior’s heart equate skill or ability.

Yes, we all want to be the best in the martial arts, and through the training one will develop skill of movement, naturally some will be better and some not as good.

But, in budo this really doesn’t matter, as one only has to die once.

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The aim of the Shinmyoken dojo (school of the life giving sword) is to understand nature and the movement of being zero through taijutsu. The school exists to create and transmit this through the experience of isshi soden.

Located in Westchester New York, the Shinmyoken dojo is a martial arts training group founded in 2005 with the aim of coming together as martial arts friends to study the Japanese martial arts of Masaaki Hatsumi through the lessons of the Bujinkan dojo. 

As friends (buyu) we come together to grow, learn, and share our individual potential in this wonderful martial art. In our group there is no beginner or advanced classes, as we all have the capacity to learn the martial arts in great stride. 

No previous martial arts experience is needed, new members, and out of town or traveling Bujinkan buyu are always welcome. 

The focus of the group is to make progress each week in learning the martial arts, developing skill, self-defense ability, and an understanding of how and why people move. 

Training is supervised by Fred Feddeck who has been studying the Bujinkan dojo martial arts since 1993. 

In 2003 he was honored to take the godan shinsha with the training group later forming as a vehicle to study what he has been taught and experienced in the Bujinkan dojo martial arts. 

Joe Maurantonio, dai-shihan, is and continues to be his teacher and mentor. 


Training in budo taijutsu through our dojo is offered in three class formats. 

The first is our weekly Saturday morning classes from 9-11 AM at a local park in Yonkers which is accessible by car, bus, and Metro North train. 

Second is our regular weekly zoom class as a way to build on the physical practice-paired movements explored in our Saturday classes. 

Third is our monthly discussion class exploring martial arts philosophy, history, tactics, and kuden. 


Membership in the dojo is open to those eighteen years of age or older and who can abide by the rules of the Bujinkan. 

Those interested in joining the dojo will be asked to fill out a brief questionnaire as an introduction and meet with the head instructor before an invitation to watch a class will be extended, general martial arts questions and other training inquiries are also welcome. 

Questions, comments, feedback, and inquiries may be emailed here:

Shinmyoken Dojo

Westchester | New York

Email Contact: