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It is a popular misconception that American Jiu-Jitsu was named “American” solely to represent a “new” style of jiu-jitsu. While it is true that the founder of Legion, Keenan Cornelius, has been recognized for his unique style of fighting – AJJ was branded as such to represent a different approach to the sport’s culture. American Jiu-Jitsu is not limited to just “Brazilian” or “Japanese” Jiu-Jitsu. Instead, it embodies and draws from many grappling and martial arts forms; wrestling, sambo, and judo – to name a few. American Jiu-Jitsu will continue teaching and honoring traditional martial arts principles of discipline, respect, and responsibility – but will not subscribe to hero-worshiping or strict hierarchies within schools that leave students feeling lesser than their instructors. Instead, we provide high-quality instruction while embracing team camaraderie, support, and fun. Regardless of gym affiliation, nationality, background, experience, or belt rank – Legion is a school where anyone can walk in and will find American Jiu-Jitsu approachable and easy to integrate into.

YES! San Diego locals are invited to take advantage of a FREE WEEK TRIAL. Try us out, see how you like the classes, instruction, your training partners, the gym culture, and our facility before you commit to anything.

And, if you are brand new to the sport, we’ll set you up with one of our instructors for a free, 30-minute introductory session! Zero pressure, no uniforms, just a chance for you to step on the mat and learn some of the most basic movements, so you’re ready for our White Belt class. If you already consider yourself a Jiu-jitsu aficionado (aka, you are Blue belt or higher), you can drop in a single class for a flat-rate fee, or drop in ALL DAY and take every class because… Why not? 

If possible, please try to arrive 15 minutes early so that you can meet the staff and instructor, sign a waiver, and become orientated with our space. Typically, people wear sandals (since shoes on the mat are not permitted) and comfortable exercising clothes. If you have a gi of your own, bring it! If not, we have rental gis available as well as gis for purchase. For a no-gi class, a rashguard and shorts should be worn. And of course, a water bottle is highly recommended. We have a filtered water station you can refill as needed.

A gi is a uniform worn during jiu-jitsu (as well as various other martial arts, including judo, karate, judo, and sambo) training. The word “gi” comes from the Japanese term, “Keikogi.” Keiko means practice; gi means dress or clothes. A gi consists of 3 pieces; the gi jacket, pants, and belt. Different parts of a gi are strategically utilized for grips, chokes, guards, and other techniques during training. Typically, it is heavily stitched and usually made of cotton to withstand the rigors of daily practice. 

Absolutely not! We have tons of gi’s ready and available for you to keep with you and wear during your first week or so (you’ll just put a small deposit down so we can ensure it’s safe return to our miscellaneous gi vault). After you fall in love with jiu-jitsu, though, we do have rentals, as well as phenomenal Legion-branded gis available to purchase. 

If wearing a gi is never your thing, though, we also have no-gi classes on M/W/F 10:30 AM-12 PM, and T/TH from 6 PM-7:30 PM.  

Believe it or not, we do NOT care! At all. Please wear whatever gi you have. Legion has absolutely no gi policy. Any color, any brand, any logo, any gym affiliation. The entire purpose of American Jiu-Jitsu is to be as accessible, welcoming, and judgment-free as is possible. Just come train.

By all means, please do! We frequently have visitors drop in for training from all over the world.

Since you are not a local resident (we will check your ID), you are not eligible for a Free Week Trial. Though depending on the length of your stay, there are different options available for you! Be it a Single Class Drop-In or an Unlimited Month of classes, we’ll work out the best way for you to join us in training for however long you’d like to.

In short – and perhaps the most obvious point – the uniform! In Gi Classes, you wear a gi. In No-Gi, you don’t! Gi jiu-jitsu, the uniform is a fundamental piece of most techniques and movements. No-gi jiu-jitsu, on the other hand, more closely resembles wrestling as it is often faster paced and places emphasis on speed rather than leverage. In no-gi classes, you can wear rash guards and board shorts or leggings. While each style has advantages and disadvantages (technically speaking), they share a remarkably similar conceptual foundation and are absolutely complementary to one another in training jiu-jitsu overall.

Most definitely! In addition to being immensely FUN, training will increase your muscle tone, bodily coordination, cardiovascular capacity, muscular endurance, balance, and will (inevitably) reduce overall body fat. All that being said, please make sure you hydrate and fuel yourself properly before and after training.

YES! American Jiu-Jitsu is an excellent choice for women, especially for how it contributes to one’s self-defensive ability, sense of community and belonging, and of course, mental and physical fitness. Regarding self-defense, it is a fantastic skillset to have (and practice) because, when an “opponent’s” physical size exceeds our own, jiu-jitsu trains us to utilize leverage and specific techniques that work to fill that gap. Outside of self-defense, the jiu-jitsu community is widespread and actively growing; passionate people with a shared passion come together to practice, make mistakes, and learn from one another. Lastly, unlike other popularized martial arts, jiu-jitsu does not include over-aggressive attacks, punches, or kicks that leave people unconscious. Rather, jiu-jitsu is quite the opposite. It is a more fluid, almost graceful-looking martial art that will challenge you both physically (get ready to increase your cardiovascular endurance!) and mentally, as you think logically to apply learned techniques and movements during training. 

The community of women in jiu-jitsu is still a minority compared to men, so we are actively working to change and balance it. All female-identifying individuals enjoy a 10% discount on all commitment memberships.

Absolutely! Regardless of your child’s coordination/ body awareness/ strength/ size/ etc., they CAN and WILL excel at jiu-jitsu with enough effort and consistency. Training jiu-jitsu is an interactive, engaging, and FUN activity where your little one (or big one! We have kids ranging from age 4 to age 15) will improve their balance, reflexes, flexibility, and coordination. In addition to the physical benefits, practicing American Jiu-Jitsu and its embodiment of traditional martial arts principles will gently endow upon them discipline, resiliency, patience, work ethic, and, most importantly, will boost their self-esteem. Our kids curriculum, written by the young man who teaches the classes, places extra emphasis on rewards for effort and engagement – and never utilizes negative points or punishments. 

Please feel free to write to us at if you have any specific questions about our Eaglets Program!


No! We have members here who range from 4 years old to over 70! We offer both adult and children’s classes. As a sport, jiu-jitsu should be and at Legion is, truly for everyone.

  • Shoes OFF while on the mat, ON while off the mat. 
  • Oh egos, too! Leave that with your shoes, on the side. 
  • Gis must be washed and cleaned for class. If you attend multiple classes in a day, a fresh gi must be worn for each class! 
  • Respect your training partners. Respect your instructors. Respect your body! Training jiu-jitsu is not about proving your strength or ability to dominate – don’t do that here. We will ask you to leave.

While we are down for worm guard being on the mats, we do everything in our power to avoid the presence of any other type of “worm.” We fully recognize the importance of maintaining a cleanly and sterile academy so our members and staff feel safe and confident about training frequently.

Twice a day, our entire mat space is vacuumed, then mopped down and sterilized with an anti-fungal, anti-bacterial, and skin-safe cleaning solution.
Our locker rooms, bathrooms, weight-lifting area, and common areas, too, are cleaned and tidied daily.

Additionally, as general rules for our members, we require that shoes are always worn when off the mat, a fresh gi must be worn for each class (if taking multiple in a row), and dirty gis cannot be worn in the weights area if someone chooses to lift after class.