Discover a secure and welcoming space to kickstart your Jiu-Jitsu journey the right way. Our classes, crafted by seasoned professionals, are designed to suit you—regardless of age or skill level. Join us and embark on your path to mastering the art of Jiu-Jitsu!


The Knots Jiu-Jitsu program is proudly a pioneer in playful teaching in martial arts here in New Brunswick. Since the start, we have prioritized an enjoyable learning experience to expedite skill acquisition effectively. Rooted in evidence-based principles, our approach not only enhances productivity but also cultivates camaraderie among participants. Research suggests that fostering a playful environment improves communication and promotes a positive mindset, enhancing the overall learning journey. At Knots Jiu-Jitsu, we believe that a playful mindset not only accelerates skill development but also transforms everyday, potentially stressful situations into opportunities for engaging and entertaining experiences.

Jiu Jitsu

Brazilian Jiu-Jitsu, celebrated as a leading non-violent self-defense art, stands out with its foundational principles rooted in leverage, action-reaction dynamics, torque application, and strategic positioning. In contrast to traditional assumptions, its techniques prioritize finesse over sheer strength or flexibility, highlighting the indispensable importance of regular attendance and focused learning for achieving mastery. Renowned for its practicality, Brazilian Jiu-Jitsu equips practitioners with a refined skill set that seamlessly blends technique and tactical acumen, tailor-made for real-world self-defense scenarios. With its emphasis on adaptability and intelligence in combat, Brazilian Jiu-Jitsu offers a transformative journey where mental agility and physical prowess converge to unlock one’s full potential.


Our mission is to help people on their way to meet the best version of themselves. We believe that through Jiu-Jitsu we can unleash our full potential as human beings by being resilient while facing challenging tasks, learning how to defend ourselves, making lifelong friends, practicing meaningful physical activities, and improving our self-awareness.







Our Dojo

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See what our members have to say!

Knots is an amazing place to learn Jiu Jitsu. I have been going there since April and it is such a friendly environment to be a part of. All of my teammates are very fun to work with and are happy to help. Above all Cassio Martins is an amazing coach who cares not just about teaching, but he also cares for each and every one of his students and makes everyone feel welcomed.
Qais AtiyehQais Atiyeh
18:53 25 Oct 22
Amazing gym with an amazing coach. Coach Cassio is not just highly skilled in the art of Jiu Jitsu he is also a great teacher. Techniques taught are not rushed and are broken down to small elements making it easy for everyone to learn. The gym has a positive atmosphere. Everyone is friendly and willing to help.
Yannick GautreauYannick Gautreau
12:58 27 Jul 22
I started BJJ at knots just about 3 months ago, Cassio is a fantastic instructor. I was hesitant to join at first but I'm glad I tryed. The other athletes are also very welcoming. Great place to learn and train Jiu-Jitsu.
Joanie BretonJoanie Breton
13:45 20 Jan 22
Our son and daughter are in Knots jujitsu program in Fredericton for almost a year now. Cassio goes above and beyond to have amazing classes for his trainee and his wife Natasha even joined the class so my daughter wouldn’t be the only girl. We are currently in lockdown and our children talk about going back to classes daily they miss it so much.We are very glad to have chosen knots jujitsu.