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KnuckleUp Academy

4.8 ★★★★★ 113 Google reviews · Muay thai gym in Douglasville, Georgia

Free trial Beginners welcome Kids & teens Private lessons Fight team

Clean venue offering Brazilian jiu-jitsu, boxing, Muay Thai and MMA classes.

Plan your first class

  • Free trial or intro class most gyms welcome new members 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 muay thai classes — built around discipline, focus, and confidence
  • Private lessons private, one-on-one coaching available — a focused way to start or to work around a busy schedule; ask about availability and rates
  • Fight team a competition team for members who want to test themselves as amateur fighters
  • Today see hours ·
  • Website & schedule knuckleupacademy.com — book classes and see the live schedule
  • Phone +1 678-871-6621

Hours

Monday 6–10 am, 4:30–8:30 pm
Tuesday 6–10 am, 4:30–8:30 pm
Wednesday 6–10 am, 4:30–8:30 pm
Thursday 6–10 am, 4:30–8:30 pm
Friday 7–10 am
Saturday 8 am–12 pm
Sunday Closed

Hours shift for holidays, seminars, and open-gym times — worth a quick check before a special trip.

The classes they run

Muay thai classes on the schedule at KnuckleUp Academy, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

🌱 Beginner Muay Thai 2 mentions

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🧒 Kids Muay Thai 11 mentions

“Austen runs an excellent program for both kids and adults, and his ability to coach across different age groups really shows his passion and dedication to the sport.”

All gyms that run kids muay thai →

👤 Private Lessons

“I also value the individualized attention they provide, ensuring each child receives meaningful one-on-one time.”

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🏆 Fight Team 2 mentions

“I’ve been going to knuckle up for years, and as fighter I can say that this place has helped me sharpen my skills in all areas.”

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🛡️ Self-Defense

“I recommend it to any parent searching for a self-defense course.”

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Other martial arts here

Muay thai gyms are usually multi-discipline. Here's what else members mention training under the same roof at KnuckleUp Academy — mined from their reviews and the gym's own info.

🥋 Brazilian Jiu-Jitsu (BJJ) 6 mentions

“If your serious about your fitness journey, wanting to learn jiu jitsu, striking or improve conditioning, this is the place to be!”

Other gyms that also teach brazilian jiu-jitsu (bjj) →

Disciplines are mined from reviews and the gym's own info — they show what members have trained, not a formal class guarantee. If you specifically want BJJ, boxing, or MMA alongside muay thai, confirm the current schedule with the gym.

What members say

The things reviewers bring up again and again across 113 Google reviews — in their own words.

🧑‍🏫 expert, authentic coaching 4 mentions

“Good environment, all the coaches and the owner are very knowledgeable and want to help you learn no matter what age or experience level you’re at.”

🌱 welcoming to beginners 8 mentions

“The trainers there are super welcoming, supportive, and amazing at making sure you not only get a fantastic workout, but feel comfortable and have a good time doing so.”

🤝 no-ego, friendly gym 15 mentions

“The trainers there are super welcoming, supportive, and amazing at making sure you not only get a fantastic workout, but feel comfortable and have a good time doing so.”

📘 real technique & fundamentals 2 mentions

“If you're looking for a fun, supportive, informative and challenging experience KnuckleUp is definitely for you !”

🔥 killer workout & conditioning 2 mentions

“If your serious about your fitness journey, wanting to learn jiu jitsu, striking or improve conditioning, this is the place to be!”

🧒 strong kids program 2 mentions

“My daughter is athletic, but struggles with confidence and socializing.”

From the reviews

KnuckleUp has been one of the best decisions we’ve made for our son. Austen runs an excellent program for both kids and adults, and his ability to coach across different age groups really shows his passion and dedication to the sport. I’ve seen other coaches, but his training style truly stands out.

★★★★★ — Victoria, May 2026

Knuckleup is where it’s at! Was pretty consistent for a few years before I had to relocate. Came back after almost 4 years and it was like riding a bike. Coach Austin was just as welcoming and patient and enthusiastic as ever! Lots of new faces to me but the old camaraderie was still there!

★★★★★ — Ife, Dec 2025

This program is fantastic. My son and his friends have been enrolled for a few months, and he really enjoys it. I recommend it to any parent searching for a self-defense course. They also offer classes for adults, which I’ve been considering myself.

★★★★★ — Crystal, Jan 2026

This gym offers top tier training, great energy & motivating coaches. The environment is welcoming but intense to challenge you every session. If your serious about your fitness journey, wanting to learn jiu jitsu, striking or improve conditioning, this is the place to be!

★★★★★ — Diego, Oct 2025

Excerpts from public Google reviews. Read all 113 reviews →

New to muay thai? Start at KnuckleUp Academy

KnuckleUp Academy comes up as a beginner-friendly gym — noted on their own site. If you've never thrown a punch or a kick, 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 to start — you get in shape by training, not before it, and coaches scale the conditioning to you. Second, you won't be thrown into sparring — reputable gyms build fundamentals (stance, footwork, and the basic strikes of the "art of eight limbs") for weeks before any contact, and sparring stays optional. Third, all levels 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 gyms 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 muay thai class at KnuckleUp Academy

Nervous about walking into a muay thai gym for the first time? Almost everyone is, and good coaches expect beginners to come through the door. Here's what to know. What to expect: a typical first class is a warm-up, then drilling the basics on pads and bags — not fighting. Rest whenever you need to; no one will bat an eye. What to wear: shorts or athletic wear and a t-shirt; you'll train barefoot on the mats. What to bring: water and hand wraps if you have them — many gyms lend gloves for a first class, so it's worth asking when you call. As you keep training you'll add your own gloves, wraps, a mouthguard, and shin guards. Sparring is optional and comes later, once your fundamentals are solid. Arrive 10–15 minutes early to sign a waiver and meet the coach. It gets easier fast — most people feel far more at home by their third class.

Muay thai is a contact sport. Ease in, listen to your coaches, 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 KnuckleUp Academy

7475 Douglas Blvd Ste 204, Douglasville, GA30135

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