Manassas’ Premier Jiu Jitsu Academy
Free 20-Minute Intro Session - No EXPERIENCE Needed
What to Expect
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Zack Ghalayini
Instructor
Zack Ghalayini is the owner of Fourth Dimension Jiu Jitsu and an active competitor who has tested himself at the highest levels, including IBJJF Worlds, Pans, and ADCC events. He brings years of coaching experience with both kids and adults, from brand‑new beginners to serious competitors.
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Learn the basics
What the intro session covers
The intro session is a free 20-minute private class that covers the basics of 4D Jiu Jitsu, including a tour, an explanation of class structure, rules, safety, and a few beginner moves to get you started.
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Try a free Week
Free 1 week trial
After the intro session, you get a free week, so take advantage of it and join as many classes as you like!
Who we Train
We train adults and kids, from beginners to competitors, with classes for those who just want to learn and those aiming to compete. Even if competing isn’t your goal, we offer more competitive-style training for anyone interested. Plus, we have women’s-only classes every week.
Testimonials
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Great instruction and great community, I have thoroughly enjoyed my time here and I have felt huge improvements in my Jiu Jitsu.
Timothy
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Fourth Dimension is a such a great place to train jiu jitsu. The gym is clean, the people are competitive (yet friendly), and the instruction is top notch. I really enjoyed training here shortly after it opened and I look forward to coming back often.
Alex
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If you’re looking for a place to train hard, learn deeply, and be part of a strong BJJ community, Fourth Dimension is it. Caitlin & Zack are amazing and highly knowledgeable. Highly recommend!
Allie
Play to Win
Play to Win
Enter the Fourth Dimension
Enter the Fourth Dimension
Play to Win
Play to Win
FAQs
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Brazilian Jiu-Jitsu (BJJ) is a martial art that focuses on ground techniques, submissions, and leverage to defend oneself, regardless of size or strength. At our gym, we specialize in creating a welcoming and supportive environment for people of all experience levels, especially beginners. Whether you're looking to build confidence, improve fitness, or learn self-defense, our classes are tailored to meet your needs.
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Not at all! Many of our members start with zero martial arts background. Our expert instructors guide you step-by-step, ensuring you're comfortable and confident as you learn. We also offer beginner-focused classes to help you ease into the journey.
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During your first class, you'll be introduced to the basics of BJJ in a friendly and relaxed setting. All you need to bring is comfortable workout attire (or a gi if you have one), a water bottle, and a positive attitude!
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Training at our gym goes beyond learning self-defense. You'll improve your physical fitness, reduce stress, build discipline, and join a close-knit community of people who share your passion for BJJ. Plus, our experienced instructors are committed to helping you achieve your personal goals, whether that’s competition, fitness, or fun.
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It’s never too late to start Jiu Jitsu. We have adult beginners of all ages, including people in their 30s, 40s, 50s, and beyond. Jiu Jitsu can be adapted to suit your fitness level, goals, and mobility. Whether you’re looking to get in shape, learn self-defense, or challenge yourself mentally and physically, our coaches will help you progress at your own pace. Everyone starts as a beginner, no matter their age.
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When people say "Jiu Jitsu" in the U.S., they’re usually referring to Brazilian Jiu Jitsu (BJJ). BJJ is a specific style of Jiu Jitsu that focuses on ground fighting, submissions, and positional control, and it was developed in Brazil from traditional Japanese Jiu Jitsu.
While Japanese Jiu Jitsu was originally a broader system that included strikes, joint locks, throws, and self-defense techniques, Brazilian Jiu Jitsu specializes in live sparring (rolling) and techniques that allow a smaller person to control and submit a larger opponent on the ground.
At Fourth Dimension Jiu Jitsu, we teach Brazilian Jiu Jitsu (BJJ) with a focus on practical, effective techniques for both sport and self-defense.