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Kaizen Karate & Self-Defense

5 ★★★★★ 94 Google reviews · Karate dojo in Windsor, Colorado

Karate dojo Affiliated Beginners welcome Kids & teens Weapons / kobudo Competition team

Affiliated dojo — reviews and the dojo's own info point to a recognized Karate style organization or franchise (think Shotokan/JKA, Kyokushin, Goju-Ryu, Isshinryu, Tiger Schulmann's or Villari's). If lineage matters to you, ask which style and organization the dojo belongs to, and under whom the head sensei earned their black belt.

Plan your first class

  • Beginner-friendly all levels welcome, including total beginners — you don't need to be fit or have any experience to start
  • Kids & youth classes kids and youth Karate classes (ages 3–4) — built around discipline, focus, and confidence
  • Women's classes dedicated women's Karate classes — a welcoming space to train and start out in
  • Weapons / kobudo traditional weapons (kobudo) classes — kata with the bo, sai, and nunchaku, taught with control and discipline
  • Adult classes adult Karate classes — training built for grown-ups, from fitness and fundamentals to kumite (sparring) at your own pace
  • Competition team a competition team for students who want to test themselves at kumite tournaments
  • Today see hours ·
  • Website & schedule martialartswindsor.com — book classes and see the live schedule
  • Phone +1 970-217-0501

Hours

Monday 3:30–8:15 pm
Tuesday 3:30–8:15 pm
Wednesday 4–8:15 pm
Thursday 3:30–8:15 pm
Friday Closed
Saturday Closed
Sunday Closed

Hours shift for holidays, belt tests, and seminars — worth a quick check before a special trip.

The classes they run

Karate classes on the schedule at Kaizen Karate & Self-Defense, confirmed in students' own reviews and the dojo's own info — not guessed from the sign out front.

🧒 Kids Karate 28 mentions

“The instructors are fantastic with the kids and do an amazing job making sure they understand and perform each technique correctly.”

All dojos that run kids karate →

⚔️ Weapons (Kobudo) 2 mentions

“The dojo has classes for adults that take place deeper into the evening, alongside offering weapons classes as well.”

All dojos that run weapons (kobudo) →

💪 Women's Karate 3 mentions

“Kaizen is a diverse and welcoming place - so much so that I recently joined in and took my first women's self-defense class - highly recommend!”

All dojos that run women's karate →

🛡️ Self-Defense 18 mentions

“Kaizen is a diverse and welcoming place - so much so that I recently joined in and took my first women's self-defense class - highly recommend!”

All dojos that run self-defense →

🥋 Adult Karate

“The dojo has classes for adults that take place deeper into the evening, alongside offering weapons classes as well.”

All dojos that run adult karate →

Other martial arts here

Karate dojos are usually multi-discipline. Here's what else students mention training under the same roof at Kaizen Karate & Self-Defense — mined from their reviews and the dojo's own info.

🥊 Kickboxing

“they also offer Kickboxing and Self Defense along with some weapons training.”

Other dojos that also teach kickboxing →

🛡️ Self-Defense 18 mentions

“Kaizen is a diverse and welcoming place - so much so that I recently joined in and took my first women's self-defense class - highly recommend!”

Other dojos that also teach self-defense →

Disciplines are mined from reviews and the dojo's own info — they show what students have trained, not a formal class guarantee. If you specifically want taekwondo, jiu-jitsu, or kickboxing alongside your Karate, confirm the current schedule with the dojo.

What students say

The things reviewers bring up again and again across 94 Google reviews — in their own words.

friendly, respectful dojo 10 mentions

“My kids have made long lasting friendships through Kaizen and your family become part of the Kaizen family that cheers for and supports each other.”

strong technique, kata & fundamentals 7 mentions

“Not only do the kids learn the fundamentals, but discipline, respect, and responsibility are always reiterated (and required) during class.”

🧒 strong kids program 4 mentions

“Our kids are making noticeable gains in their physical and mental skills in just a few months in the kids classes.”

active competition / tournament team 6 mentions

“My 13yo daughter has been at Kaizen for close to two years now, and has gained so much from the daily training, leadership opportunities, and tournament competition.”

💵 good value / fair pricing 2 mentions

“In addition to the classes, there are leadership programs tailored to kids of varying ages which I think adds great value.”

💗 welcoming to women 4 mentions

“Kaizen is a diverse and welcoming place - so much so that I recently joined in and took my first women's self-defense class - highly recommend!”

From the reviews

We took a private self defense class with Matt at Kaizen Karate in Windsor, CO and it was a really REALLY incredible class. I also had my 9 year old daughter take it with us. I was very impressed and we all came away with extremely powerful lessons in self defense!

★★★★★ — Donna, Mar 2026

Amazing women's self defense classes, we took level 1 and immediately took level 2 the following weekend. Matt and his son and team teach wonderful skills that I my family and high school and soon to be in college daughters really needed to help learn how to defend themselves in lots of different scenarios.

★★★★★ — Megan, Mar 2026

A group of 7 did two self defense courses with Matt, Mason, Zoey and Jeannette. They taught us many life saving skills, how to be aware of surroundings and how to deescalate, be assertive, and keep calm while being attacked. The class was tailored to everyones level.

★★★★★ — April, Mar 2026

Highly recommend! Not only is my son enjoying it so much, but we are also seeing incredible gains in his school and home life after starting Karate. He is considerably more focused, respectful, and confident. This has been such an important addition to his weekly schedule. He looks forward to Karate every week!

★★★★★ — Brooke, May 2025

Excerpts from public Google reviews. Read all 94 reviews →

New to Karate? Start at Kaizen Karate & Self-Defense

Kaizen Karate & Self-Defense comes up as a beginner-friendly dojo — noted on their own site. If you've never thrown a punch or set foot in a dojo, that's exactly who a good beginners program is for. A few things worth knowing before your first week. First, you don't need to be fit or flexible to start — you get in shape by training, not before it, and the sensei scales the intensity to you. Second, you won't be thrown into hard sparring — reputable dojos build fundamentals (stances, blocks, punches, and kicks) for weeks, and kumite (sparring) eases in gradually, with pads and control. Third, all levels and ages really are welcome — ask about a dedicated beginners or fundamentals class time so your first session is alongside others who are also starting out. Most dojos are happy to let you watch or try a class first, so reach out before you commit.

See their beginner class info

Your first Karate class at Kaizen Karate & Self-Defense

Nervous about walking into a Karate dojo for the first time? Almost everyone is, and a good sensei expects beginners to come through the door. Here's what to know. What to expect: a typical first class is a warm-up, then drilling basic stances, blocks, punches, and kicks — not hard sparring. Step to the side whenever you need to; no one will bat an eye. What to wear: athletic wear you can move in (or a gi if you have one); you'll train barefoot. What to bring: water, and a mouthguard if you have one — many dojos lend a loaner gi for a first class, so it's worth asking when you call. As you keep training you'll add your own gi and the belt your dojo awards you. Kumite (sparring) eases in gradually, once your fundamentals are solid. Arrive 10–15 minutes early to sign a waiver and meet the sensei. It gets easier fast — most people feel far more at home by their third class.

Karate is a contact sport. Ease in, train within your limits, listen to your instructors, and if you have any injuries or health concerns, mention them before class and check with a doctor if you're unsure.

Where to find Kaizen Karate & Self-Defense

1180 W Ash St, Windsor, CO80550

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Listing verified July 2026 from public business records and member reviews. Something out of date? Report a correction. Own this dojo? Claim your listing — it's free.