A martial arts program
Meet The Instructors
Since 2004, Sensei John Keim has been working with Z-Ultimate Self Defense Studios to create a stronger community. He and the other instructors at the studio in Broomfield, CO are committed to inspiring men, women and children of all ages and abilities to realize their personal best through a dynamic self defense program focused on personalized training. At Z-Ultimate, students DO achieve practical self defense and fitness goals in a school purposely designed to be the best and most extreme example of what a self defense studio should be in the world of today. Whatever your age, shape, size or story, come try a complimentary lesson and see for yourself!
Fun Fact: John’s favorite food is the banana, because “it gives me the nutrients I need for physical activity.” His favorite animal is a cat, because “they have amazing agility, and because I like the irony of a fierce predator being cute and fuzzy.”
Erika Yanke has been a part of Z Ultimate Self Defense Studios since joining as a student in the fall of 2011. She was so impressed with the benefits and values of Z Ultimate’s system and how it helped her become her ultimate self that she decided to join as an instructor in Z Ultimate’s University of Martial Arts Professionals in the summer of 2012 and share the benefits of the martial arts in the community. She assisted in both the Broomfield school under Sensei John Keim and the Arvada school under Sensei Liz Shockley before taking over as Chief Instructor of Z Ultimate Boulder April of 2013. It has been a joy and privilege to share the timeless traditions and philosophies of the martial arts with the Boulder Community and helping every student achieve their personal best.
After completing the initial IFSN assessment, Contact John or Contact Erika in Broomfield or Contact the Boulder Location at any time to begin discussing how Z-Ultimate can best support your child.
Z-Ultimate Self Defense Studios, LLC – ZUSDS – is a part of a family of martial arts companies formed with one goal in mind – to provide “Z-Ultimate” martial arts experience for students and their families by providing life changing and character building experiences through world-class personalized martial arts instruction. It is the largest martial arts company of its kind, with locations in the Midwest and on the West Coast.
What is unique about Z-USDS – besides it’s Dynamic Mastery Method™ of instruction – is that it is NOT just an association or license, where any martial artist can pay a small fee and use the rights to the logo and attain certification. There are many such organizations that boast hundreds, even thousands of members with this model.
Private and Group classes available
Tiny Tigers: ages 3-7
Little Leopards: ages 8-11
Juniors & Teens: ages 12-15
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