TRX®/Cross Training - Kettle Bell - Warrior Training - Bootcamp
Mixed Martial Arts - Brazilian Jiu Jitsu - Self Defense
Personal Training
Located in Downtown Boulder - Locally owned and operated
Enjoy the attention you don’t get at other gyms!
See what our clients say about us!
Define Defense is conveniently located in downtown Boulder, Colorado. We offer different programs for different people and different goals. We have low impact TRX and Kettle Bell fitness classes which range from beginner to advanced athletes and we have intense Warrior Training classes for the die hard fitness fanatics as well. Define Defense also has the most complete Mixed Martial Arts & BJJ program in the area under owner Sander Vanacker and recently retired professional MMA fighter Conor Heun!
Define Defense is proud to be able to offer a high end facility with cutting edge equipment for a superior training experience to its clients!
You will be instructed by educated and certified instructors. We have the knowledge and experience to get you results and offer you a fun and diverse training experience. We never do the same workout twice and our classes and programs are well thought out to ensure you make progress, whether you are looking for technical skills or physical results. If you’re looking to train Mixed Martial Arts and Brazilian Jiu Jitsu, you came to the right place! Get taught by Conor Heun and Sander Vanacker. You are also able to combine your MMA training with great conditioning classes.
Define Defense offers fantastic TRX and Kettle Bell classes. Most studios spend the whole time around the one piece of equipment, which can lead to boredom or your body gets used to the workout. At Define Defense, we take it to the next level and constantly keep your body and mind guessing as we always switch things up. We combine all our cutting edge equipment to keep you moving and constantly have you do different things. The core of the workout revolves around the TRX Suspension Bands or Rip Trainers, however we throw in even more proven methods and equipment to give you a better workout and more results!
Why Do People Train at Define Defense?
Safe: Our priority is to keep you safe during training from injuries
Health & Performance: You are guaranteed to improve your physique during our fun but intensive classes
Cutting Edge: We use proven traditional and alternative fitness equipment to give you a diverse workout so you reach your goals
Fitness Programs: You will be taught by a certified Personal Trainer, Kettle Bell and TRX Suspension Band instructor
Details: We pay attention to details, hygiene and your comfort. Just check out our facility and you will see what we mean.
Parking: Define Defense validates parking for all clients
Individual Attention: We pay a lot of attention to your individual needs, limitations and goals during your training
Realistic Self Defense: Our program is unique and highly effective since it teaches the most practical self defense techniques
MMA: Train Mixed Martial Arts to get in shape and to have fun or to compete in fighting competitions
Brazilian Jiu Jitsu: The most effective techniques on the ground for MMA or Self Defense
Experience: Your instructors have many years of experience and are certified in their fields
Exclusive Fitness Deals:
First class $20, second class free or try out your first month for only $59!
Tough Mudder Team Training Deals.
