Seriously. Fun. Jiu-Jitsu.
World-class coaching meets a welcoming community. Structured programs from Baby Jitsu to Adults—available 7 days a week.
The Knots Method
A structured and playful approach designed to keep students consistent, engaged, and improving—from white belt to black belt.
Fun First
Training should be enjoyable. Our playful approach keeps you coming back, class after class.
Safe & Welcoming
A structured environment where everyone belongs—regardless of age, size, or experience.
Structured Curriculum
The Knots Method delivers progressive, measurable skill development at every level.
Competition Ready
World-class coaching from a multiple-time international medalist in Gi and No-Gi.
Core Values
Respect • Fun • Commitment • Resilience • Self-Awareness • Inclusion
Professor Cassio Martins
Founder & Head Coach
BJJ black belt since 2012, promoted under Master Breno Ângelo (Gracie Petrópolis) and Rolker Gracie, son of Grand Master Hélio Gracie. With 15+ years coaching across multiple countries, Cassio brings global competition experience and a Bachelor's in Physical Education to every class.
IBJJF, ADCC, FJJ-Rio & UAEJJF Multi-Medalist
World Pro Coach
See the Fun in Action
Real classes, real kids, real smiles — straight from our mats.
A Program for Everyone
From tiny grapplers to seasoned competitors—find your place on the mat.
Loved by Our Community
“We absolutely love Knots! Coach Cassio is incredibly knowledgeable, professional, and friendly. He creates such a positive learning environment for the kids, and you can tell he truly cares about their progress and confidence. His wife Natasha is always there to welcome everyone with a smile and offer help, which makes the whole place feel so warm and inviting. Our kids feel completely comfortable here, and we couldn't be happier with the experience so far. Highly recommend!”
Valérie Dechenes
Parent
“As a beginner in Brazilian Jiu Jitsu, I couldn't have asked for a better gym. The instructors here make learning self-defense and martial arts both fun and approachable, even if you've never trained before. The classes are structured so you build skill quickly — from takedowns to submissions — and you always roll with partners who help you improve. The atmosphere is welcoming, supportive, and filled with people who are passionate about training. Whether you're looking to get in shape, compete, or just learn real self-defense skills, this gym is the place to be.”
Connor Day
Adult Member
Your Free Introductory Class Awaits
Every journey starts with a single step. Book your free 30-minute private introductory class and discover why Knots is different.