Kids Martial Arts: Muay Thai and BJJ

Kids Muay Thai, BJJ, and even a competition team are waiting for you at Krufit to help your child build unshakable confidence, learn real self-defense skills, and find a place where they truly belong? The KruFit Kids Martial Arts program in Indianapolis is designed for children aged 5 to 12, offering multiple training options to learn the basics and styles they prefer, as well as opportunities to advance to competition training. We do this all in a safe, supportive, ego-free environment.

Set up your child’s first martial arts lesson

Our Kids Class Offerings

We offer distinct programs that can be trained alone or combined, giving your child a complete martial arts education. Both programs will help your child improve mentally, physically, and emotionally through consistent training.

View the class schedules below and offerings and when you’re ready, schedule your child’s first class.

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Kids Brazilian Jiu-Jitsu (Ages 5-12)

Our BJJ classes are all about grappling fundamentals, problem-solving, and fun. In a safe and supportive setting, we teach kids how to use leverage and technique to control a situation, building their confidence and respect for teamwork.

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Kids Muay Thai (Ages 5-12)

This is where kids burn energy and build discipline. Our energetic coaches teach the basics of “the art of eight limbs” through kid-friendly workouts, striking fundamentals on heavy bags, pads, and games that improve focus and coordination.

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Kids Competition Team

When your child is ready to test their skills, this is the next step. Open to kids who wish to compete, these sessions focus on sparring, strategy, and mental prep to get them ready for the big stage.

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Why Train Kids Martial Arts at KruFit?

  • Real-World Confidence.
  • The kind that comes from learning a new skill, overcoming challenges, and knowing you can protect yourself.
  • An Outlet for Energy.
  • Our classes are a fun, structured way for your child to stay active, build athletic habits, and burn off steam.
  • A Positive Community.
  • Your child will train in our signature ego-free environment, where they can make real friends and feel supported.
  • Dual-Art Advantage.
  • We are one of the few gyms in the area offering both elite striking (Muay Thai) and grappling (BJJ) for kids.
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Meet Your Kids’ Coach

All coaches are committed to helping new students, hobbyists, and competitors reach the next level in a safe, encouraging atmosphere.

Petra Russell – Blue Belt

Petra is a passionate instructor with a heart for helping young grapplers grow in confidence and discipline, both on and off the mats. With a background in teaching and a deep love for martial arts, Petra brings patience, creativity, and just the right amount of playful energy to every class. Petra’s focus is on building strong foundations, encouraging kindness and respect, and making sure every student knows that effort matters more than perfection.

Zach Gay – Muay Thai Coach

Kelly prioritizes conceptual understanding over rote memorization. She builds well‑rounded games and healthy competition culture. She founded an annual LGBTQ+ BJJ camp held at KruFit that welcomes grapplers from across the country.

Nik Tuttle- Assistant Coach for both Muay Thai and BJJ

A lifelong martial artist, Wes holds black belt rank in Kenpo 360 and has deep experience in Jeet Kune Do, Wing Chun, and catch wrestling. Specializing in stand‑up grappling and takedowns, they bring a self‑defense lens to every class and actively compete in folk‑wrestling styles in the U.S. and abroad.

Member Testimonials

  • “After losing my spark for weightlifting, I kept thinking about joining self defense/martial arts classes but had no idea where to start and was quite nervous – especially as a woman starting at 29. I’m so lucky to have landed at Krufit ”
    Kayla L.
  • “This was the second martial arts gym I tried at the start of the year, and it’s turned out to be one of the best decisions I’ve ever made. From day one, I felt genuinely welcomed, and that feeling has only grown stronger over time. I’ve met some incredible people who’ve pushed me to improve, celebrated my progress, and supported me every step of the way. ”
    Jojo K.
  • “Best Muay Thai and BJJ school in the Indianapolis area! It’s not just about fitness or the art itself, it’s about being a community of family and friends that support each other. And we have the best coach ever, Coach Jamie!!!!”
    Kelvin T.
Expert Coaches photo (team listening to coach Jamie Bradley of KruFit)

Ready for Your Kid to Find Their Fit?

Join us for a free trial class. See for yourself why we’ve been named the best gym in Fishers for Youth Sports.

New students can also schedule private lessons to jump‑start their Muay Thai or Jiu‑Jitsu training.