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.


Knots Jiu-Jitsu program was designed to be fun making the learning faster, efficiently, and enjoyable. A playful approach can also enhance productivity, bonding, and communication. Playful people have the ability to transform everyday situations, even stressful ones, into something entertaining.

Jiu Jitsu

Brazilian Jiu-Jitsu is a highly effective form of non-violent self-defense. It is all based on leverage, action-reaction, torque, and positioning. It seems unrealistic but the moves and movements require a minimum of strength, power, or flexibility relying more on your commitment to show up and learn more.








Our Dojo


Interested in joining or just learning more?

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.
Maulen KalauMaulen Kalau
17:42 25 Oct 22
Started doing BJJ in March this year at Knots!Coming here after a bit of judo training, I could notice a huge difference in the atmosphere. It is very very welcoming and uplifting here in class in comparison to the more traditional martial art schools.BJJ is great for self defense and will power development.The gym is very clean, very new, with great music, and amazing coach named Cassio, and a very positive and friendly group of students at each class.This gym is 10/10 !! Highly recommend for kids and adults !
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.