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Greubel's Mixed Martial Arts

4.9 ★★★★★ 262 Google reviews · Karate dojo in Martinez, Georgia

Free trial Affiliated Beginners welcome Kids & teens Private lessons

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

  • Free trial / intro class most dojos welcome new students with a free trial or intro class — check their site or give them a call to book your first session
  • 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 — built around discipline, focus, and confidence
  • Private lessons private, one-on-one instruction available — a focused way to start or to work around a busy schedule; ask about availability and rates
  • Today see hours ·
  • Website & schedule gmma.ninja — book classes and see the live schedule
  • Phone +1 706-737-0911

Hours

Monday 6–7 am, 4–8:30 pm
Tuesday 6–7 am, 4–8:30 pm
Wednesday 6–7 am, 4–8:30 pm
Thursday 6–7 am, 4–8:30 pm
Friday 6–7 am, 4:30–6:30 pm
Saturday 10 am–1 pm
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 Greubel's Mixed Martial Arts, confirmed in students' own reviews and the dojo's own info — not guessed from the sign out front.

🧒 Kids Karate 11 mentions

“Coach Bernard , coach Edgar and coach Ronaldo go above and beyond to teach the kids and my kids just think so highly of them .”

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🌱 Beginners 4 mentions

“He went from being a sparring superstar in his old school to starting Greubel's in the beginner class, and it was the best decision we could have made for him.”

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🥊 Kumite / Sparring 2 mentions

“He went from being a sparring superstar in his old school to starting Greubel's in the beginner class, and it was the best decision we could have made for him.”

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👤 Private Lessons

“No matter how large the classes can be, the instructors are all really good at giving each person one-on-one time, almost like having a personal session.”

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Other martial arts here

Karate dojos are usually multi-discipline. Here's what else students mention training under the same roof at Greubel's Mixed Martial Arts — mined from their reviews and the dojo's own info.

🥋 Jiu-Jitsu 5 mentions

“You won’t find any kickboxing, boxing, or jiujitsu coach in the area with more experience and passion for their craft than Mark, Ronaldo, and Bernard.”

Other dojos that also teach jiu-jitsu →

🥊 Kickboxing 7 mentions

“You won’t find any kickboxing, boxing, or jiujitsu coach in the area with more experience and passion for their craft than Mark, Ronaldo, and Bernard.”

Other dojos that also teach kickboxing →

🏟️ MMA 4 mentions

“Great community, great programs (striking, BJJ, boxing, mma & fitness), and great facility.”

Other dojos that also teach mma →

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 262 Google reviews — in their own words.

expert instruction from a great sensei 2 mentions

“I tried multiple schools nearby, and this school stands out for having great instructors for kids.”

🌱 welcoming to beginners 7 mentions

“He went from being a sparring superstar in his old school to starting Greubel's in the beginner class, and it was the best decision we could have made for him.”

friendly, respectful dojo 16 mentions

“Everyone here brings in a family environment feel to it while still providing teaching from fighters with a lot of experience and history behind them.”

strong technique, kata & fundamentals 4 mentions

“His technique is so much better and it's giving him a great workout 2-3 days a week.”

great workout & fitness 7 mentions

“They have an excellent variety of striking, grappling, and cardio courses at different experience levels, which offers a lot of flexibility no matter what you want to do.”

clean, welcoming dojo 3 mentions

“Great community, great programs (striking, BJJ, boxing, mma & fitness), and great facility.”

From the reviews

You won’t find any kickboxing, boxing, or jiujitsu coach in the area with more experience and passion for their craft than Mark, Ronaldo, and Bernard. I’ve trained on and off my whole life. I’m in the Army so I often move around a lot and have been a member at multiple gyms throughout my lifetime.

★★★★★ — Davon, Sep 2024

I've been training here for years now... I needed to get in shape and was always interested in the sport... I wanted to find a family friendly place and was very happy to find that the atmosphere is professional and friendly... no cursing allowed... my wife and kids enjoy coming with me from time to time...

★★★★★ — Gary, Nov 2018

I have been going to Greubel's for 4 months now and I feel like I am part of the family. The instructors are simply amazing. No matter how large the classes can be, the instructors are all really good at giving each person one-on-one time, almost like having a personal session.

★★★★★ — Opwell, Apr 2018

My teenage son switched from another martial arts school to Greubel's exactly one year ago because he wanted to attend a school that would challenge him more in his favorite format, kickboxing.

★★★★★ — Mickey, Jan 2024

Excerpts from public Google reviews. Read all 262 reviews →

New to Karate? Start at Greubel's Mixed Martial Arts

Greubel's Mixed Martial Arts comes up as a beginner-friendly dojo, going by their listing and students’ reviews. 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.

Check beginner classes on their site

Your first Karate class at Greubel's Mixed Martial Arts

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 Greubel's Mixed Martial Arts

4014 Columbia Rd, Martinez, GA30907

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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.