Cassia Paixao started training Jiu-Jitsu in 2004. She was promoted to the rank of Black Belt in April of 2019.
Throughout her career, coach Cassia has won several titles, including 4x World Champion and 2x Pan-American Champion.
No matter your age or fitness level, our welcoming vibe and expert instructors from the largest jiu-jitsu school in the world will make you feel part of something special from day one.
Discover the perfect BJJ program for you and your family. We offer specialized training for every age and skill level.

Playful intro to movement and coordination helping little ones develop balance, focus, and confidence early on.

Fun and structured classes that teach respect, confidence, and teamwork while learning Jiu-Jitsu fundamentals.

Empowering teens with technique, discipline, and self-confidence through dynamic Jiu-Jitsu training.

Train hard, stay sharp, and build real confidence through Jiu-Jitsu. Strength, focus, and discipline on and off the mats.
Step 1: Click the button and fill out the form.
Step 2: Choose your class type and pick a date & time on the calendar.
Step 3: You’ll get email and SMS confirmations with all the details.
Ares Brazilian Jiu Jitsu Academy is proudly located in Lathrop, California, and is part of one of the fastest-growing Jiu Jitsu organizations in the world.
Our Lathrop academy is led by Professors Eduardo and Cassia, who are personally dedicated to guiding the growth and success of every student. Our mission is to make Brazilian Jiu Jitsu accessible to people of all ages, backgrounds, and skill levels.
We invite you to stop by, meet our coaches, and experience the welcoming atmosphere of our community. Take advantage of a free trial class and see firsthand everything Ares Academy has to offer.
Posted on Ryan LTrustindex verifies that the original source of the review is Google. Outstanding BJJ Academy with World-Class Instructors my daughters and I all train at. Ares Brazilian Jiu Jitsu in Lathrop is truly an amazing place to train. Professors Enjinho and Cassia are not only incredibly skilled and experienced, but they also have a genuine passion for teaching and helping every student grow—on and off the mats. Their leadership creates a supportive, respectful, and family-friendly environment that makes you feel welcome from day one. Whether you’re brand new to BJJ or looking to compete at a high level, the instruction here is top-tier. The academy is clean, well-maintained, and structured to accommodate both kids and adults. We’ve seen tremendous progress in our technique, confidence, and overall fitness since joining. If you’re in the Lathrop area and looking for a place to train Brazilian Jiu Jitsu, I can’t recommend Ares—and Professors Enjinho and Cassia—highly enough. This is more than just a gym; it’s a familyPosted on JohnTrustindex verifies that the original source of the review is Google. I’m grareful to have Ares Brazilian Jiu-Jitsu in Lathrop. Professors Cassia and Eduardo are exceptional martial arts instructors, showcasing outstanding leadership in their Brazilian Jiu-Jitsu classes. They create a supportive, family-friendly atmosphere that’s perfect for kids’ martial arts training. My children have grown in confidence, discipline, and skill through their youth BJJ programs. The academy offers incredible growth opportunities, making it the best choice for Brazilian Jiu-Jitsu in Lathrop. Highly recommend this top-notch BJJ school!Posted on Austin KlinesmithTrustindex verifies that the original source of the review is Google. This is my first martial arts academy at all. So glad I chose this place. Great instructors, tight knit community! We all learn together.Posted on Katrina BarajasTrustindex verifies that the original source of the review is Google. I was nervous about trying jiu-jitsu because I was completely new, but Cassia made me feel welcome from the very beginning. She is a professional, kind and passionate instructor who explains everything clearly and consistently checks in to ensure that we understand what we are doing and why. The gym is clean, easily accessible, and has plenty of parking available. The community is friendly and supportive, and even the more experienced members are happy to help. Every class begins and ends with gratitude, which I really appreciate. It’s definitely challenging, but in the best way. If you're looking for a positive and welcoming place to start or continue jiu-jitsu, this is it.Posted on Kenny KimTrustindex verifies that the original source of the review is Google. Clean, Professional and welcoming environment whatever your goals may be. The best in CA!
Cassia Paixao started training Jiu-Jitsu in 2004. She was promoted to the rank of Black Belt in April of 2019.
Throughout her career, coach Cassia has won several titles, including 4x World Champion and 2x Pan-American Champion.
Eduardo “Anjinho” Baiao have been practicing Jiu-Jitsu 1992. He was promoted to the rank of Black Belt in April of 2000. Today he is a sixth Degree Black Belt with over twenty years of experience as a fighter, instructor and internationally recognized referee.
Yes, Brazilian Jiu Jitsu is suitable for beginners of all ages and fitness levels.
No, Brazilian Jiu Jitsu is for everyone, regardless of current fitness level.
Brazilian Jiu Jitsu emphasizes technique and control, reducing the risk of injury.
Absolutely. Brazilian Jiu Jitsu teaches effective self-defense techniques for individuals of all sizes and strengths.
In your first class, you’ll start with a warm-up followed by instruction on basic techniques and positions.
Yes, many practitioners train for self-improvement, fitness, and camaraderie without competing.
Brazilian Jiu Jitsu can benefit children by promoting discipline, confidence, and physical fitness. Our academy offers a safe environment with experienced instructors adept at engaging children effectively.

At Ares Brazilian Jiu Jitsu, excellence isn’t a goal it’s our baseline. We’re more than a gym. We’re a brotherhood forged in discipline, driven by purpose, and united by the relentless pursuit of mastery. From Lathrop CA to the world, we don’t just teach jiu-jitsu. We live it.