Duluth · Minnesota

Inner Strength Martial Arts
2908 W 3rd St, Duluth, MN 55806
About Inner Strength Martial Arts
Inner Strength Martial Arts was founded in October 2009 by Professor Robert Mrotek, who had been president of the martial arts club at the University of Wisconsin-Superior and was urged by his training group to open a gym. It teaches Brazilian Jiu-Jitsu, Muay Thai kickboxing, boxing, wrestling and MMA team training for adults, alongside kids' American Karate for ages 3-6 and 7+ and a bully prevention programme for ages 6 and up. The academy is an affiliate of Professor Chewy Ybarra of Ybarra Jiu-Jitsu in Modesto, California, a fifth-degree black belt under Master Cleber Luciano — the same master who promoted Professor Mrotek to black belt in 2016 — and Ybarra visits four times a year for seminars. Mrotek travels to Thailand several times a year to train and teach seminars.
Pricing
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Programs
- Gi
- No-Gi
- Kids
- Competition
- Wrestling
- Self-Defense
- MMA
Weekly Schedule
Instructors
Lineage: Cleber Luciano
Frequently Asked Questions
Does Inner Strength Martial Arts offer gi or no-gi classes?+
Inner Strength Martial Arts offers both gi and no-gi Brazilian Jiu-Jitsu classes.
Who is the head instructor at Inner Strength Martial Arts?+
The head instructor is Robert Mrotek, a black belt with lineage through Cleber Luciano.
Does Inner Strength Martial Arts have a kids BJJ program?+
Yes, Inner Strength Martial Arts offers a dedicated program for children.