• Our Adult Karate and Self-Defense class blends the fantastic benefits of traditional Japanese karate with the self-protection skills needed for the street.

    Read more

  • Give your child the gift of confidence, leadership, respect, focus & discipline with our Kids Martial Arts classes. 

    Read more

  • Our Small Samurai Class (for children ages 3-5) introduces the children to karate basics in a fun environment.

    Read more

  • We specialize in self-protection, including our Level 1 & 2 Women's Self-Defense Classes.

    Read more

  • We will be CLOSED the week of Christmas starting Monday, Dec. 24, and classes will resume on Wednesday, Jan. 2... Check out our AWESOME Trial Offer for karate classes: get four classes and a T-Shirt for $40! Register on the home page of our website.


      Welcome to Kaizen Karate & Self-Defense in Windsor, CO! We offer Karate classes for children ages 3 and up, women's self-defense classes, and private lessons for Karate and self-defense -- including private group self-defense classes and company team-building classes. We specialize in self-protection for adults and children. Our traditional Japanese karate curriculum offers your child many fantastic benefits, including discipline, focus, and self-confidence. 

      Why choose us? Our teaching method combines the discipline and practical self-defense applications of traditional Japanese Karate with the "I Refuse to be a Victim" mentality for the street. We specialize in self-protection for both adults and children -- including anti-bullying, verbal self-defense, "stranger danger" and more. We are also proud members of the Colorado Karate Association (CKA), and students who choose to compete can attend multiple CKA tournaments throughout the year. We've produced two CKA State Champions in two years! 

      Register here for your 4 Trial Karate Classes and a T-Shirt for $40!

      Trial Offer


      Upon registering, within 24 hours we'll email you a confirmation where you'll select which classes (Small Samurai, Kids Class, or Adult Class) you'll be attending for your trial and your T-Shirt size.

      You can start right your trial right away, or use it later! Please note, however, once you start your trial, you have 30 days to attend your four classes. Come once a week for four weeks, or twice a week for two weeks, up to you! Questions? Call us at 970-217-0501 or email at novictimpledge@gmail.com!