Aftermath Brazilian Jiu-Jitsu is Poway, California's home for authentic, lineage-based Jiu Jitsu instruction. We're proud to offer a training environment built on traditional technique, real competition experience, and a genuine passion for helping students of all ages succeed on and off the mats.

Our Lineage

Jiu Jitsu is a martial art passed down from teacher to student, generation after generation. Every technique we teach can be traced back through a direct line of some of the most respected names in the sport. Our lineage is:

1. Helio Gracie
2. Francisco Mansur
3. Joe Moreira
4. Roy Harris
5. Michael Cusi
6. Jason Cook

This lineage connects our students directly to the founding principles of Brazilian Jiu Jitsu, ensuring the techniques taught at Aftermath BJJ are rooted in a proven, time-tested tradition.

Meet Head Instructor Jason Cook

Jason Cook has been training in Brazilian Jiu Jitsu since 2009 and has spent over a decade teaching classes to students of all ages and skill levels. His approach to instruction blends technical precision with patience and encouragement, helping every student build confidence both on and off the mats.

Coaching Highlights

• Training in Brazilian Jiu Jitsu since 2009
• Over 10 years of teaching experience
• Produced a Kid's IBJJF Pan American (World) Champion 8 times

Why Train With Us

At Aftermath Brazilian Jiu-Jitsu, we believe great instruction comes from a combination of proven lineage, real competition results, and a genuine investment in each student's growth. Whether you're a parent looking for a kids' program, a beginner starting your first class, or an experienced grappler chasing your next belt, our team is here to guide you every step of the way.

Ready to get started? Visit us in Poway, California, and see why our students keep coming back to train, compete, and grow.