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Inner Strength Martial Arts
4.9 ★★★★★ 153 Google reviews · Muay thai gym in Duluth, Minnesota
Plan your first class
- 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 ismaacademy.com — book classes and see the live schedule
- Phone +1 920-475-7022
Hours
| Monday | 4:30–8 pm |
| Tuesday | 4:30–8 pm |
| Wednesday | 4:30–8 pm |
| Thursday | 4:30–8 pm |
| Friday | 4:30–8 pm |
| Saturday | 12–1:30 pm |
| Sunday | 12–2 pm |
The classes they run
“My son is very active and this place has brought him discipline and a great workout that will give him skills to protect himself and his family for the rest of his life ❤️🙏🙌💪”
“What stood out most to me is their dedication to training young female athletes and giving them real opportunities to compete.”
“It’s an amazing facility to learn self defense, martial arts and to grow as a person.”
Other martial arts here
“started training kickboxing and jiu jitsu at inner strength in august of 2024 and have loved it ever since then.”
“My son chose karate and jiu jitsu while his brother chose boxing, which occurs at the same time downstairs.”
“started training kickboxing and jiu jitsu at inner strength in august of 2024 and have loved it ever since then.”
“My child has been doing karate for years, has learned a lot and enjoys it.”
What members say
“The coaches are extremely knowledgeable and care about the students!”
“Robert is so welcoming and you can tell everyone shares a respect for the art of martial arts.”
“My son is very active and this place has brought him discipline and a great workout that will give him skills to protect himself and his family for the rest of his life ❤️🙏🙌💪”
“instructors are very receptive to different skill levels and will work with you independently if you need extra help with fundamentals”
“Our kids love it, and we even got my niece and nephew to join too!”
“I had a great time at the fights hosted by this gym!”
From the reviews
I definitely have to give this place 5 stars! We were looking for a place for our kids to attend, as there is not a lot to do in our small town. We found this place, and they love it! Robert is very patient with his younger class and takes time to work with them, even when they are a bit shy or embarrassed.
great place to train. started training kickboxing and jiu jitsu at inner strength in august of 2024 and have loved it ever since then. everyone is very welcoming and kind. the coaches are amazing and teach great techniques everyday. they are also just great people and good examples of what to look up to.
I had a great time at the fights hosted by this gym! The talent coming out of here is seriously impressive. What stood out most to me is their dedication to training young female athletes and giving them real opportunities to compete.
worth the money - flat rate with incremental fees depending on how many classes you want to take, no additional fees to sign up and includes access to equipment outside of class schedules.
Your first muay thai class at Inner Strength Martial Arts
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.