One World Jiu Jitsu Academy lives up to its name in its ability to unite practitioners of all…read morelevels and empower them to learn and train in an amazingly welcoming gym led by respectable, experienced coaches. Headed by Mike Prudencio, One World Jiu Jitsu Academy had its humble beginnings and has grown significantly through the years and within that span has been home to quite a few experienced BJJ practitioners. Mike and his team do a fine job in cultivating a strong community through respect for each other and the gym - the annual friend and family social events always have a good showing! Whether you've had some experience in the sport and are looking for a new gym with great people to train, a completely newcomer to anything related martial arts, or perhaps a parent looking for an extracurricular for your child, One World will open their arms to you with something to offer. Although One World was not our first introduction to Brazilian jiu jitsu while we researched for gyms, it ranked highest on our list due to the location, flexibility of the scheduling, training space, and coaching staff. Just a couple blocks away from the highway and being quite central in Newark, the gym is easily accessible. There's plenty of parking since most of the other establishments here aren't well frequented or mainly warehouses/non-customer facing offices. Adult classes are offered multiple times a day (early morning at around 630, mid morning at 11, and evening at 6) almost everyday of the week. The kids classes are also offered multiple days of the week (weekday evenings around 5 and Saturday mornings around 10). There may be different days/times for gi and no gi but they have a convenient online calendar that is kept up to date. Each session typically consists of warmups, drills, techniques, and open rounds of rolling. They also have two mat areas. The main mat area is huge and can accommodate large classes (sometimes the kids classes can get upwards of 30-40) with still ample amount of space for training and drilling. The secondary mat area is primarily used for no gi training when the main mat area is being used for instruction. And finally the coaching staff consists of some really experienced instructors in addition to Coach Mike. Their attention to detail and ability to motivate the athletes adds tremendous value to each visit. In addition, the instructors for the kids classes are so patient while firm to enable each kid to grow and advance at their own pace. For those looking to advance their game, Mike and his team of coaches will enable you to hone the fundamentals in addition to expanding your toolkit of techniques. The group of folks coming to this gym check their ego at the door and are all very willing to share and learn from each other. There are quite a few competitors who will certainly push your limits and help you get to the next level. If you're a newbie, welcome to the club! We all started one way or another but what's important is that you start and keep coming back. Time on the mat will level up your game and with some patience and dedication, you'll continue to build confidence, get fit, and develop practical skills for self defense and competitions. And as a parent, you'll feel right at home with fellow parents who have also sought out an activity for their children to participate in to gain intangible skills (confidence, self discipline, conflict resolution, social belonging, mentorship to name a few) while learning some practical techniques for self defense. They start children as young as 7 years of age but it may also depend on their maturity. I personally came in with no formal martial arts experience and have to say, it was one of the best decisions. As a father, finding a new hobby to enjoy on my own as well as with my children and redefining myself as the kiddos grow up has made this journey a very rewarding experience. The community has been great to foster that personal growth and it's been fun to bring the new generation into the sport. Overall, One World Jiu Jitsu Academy is by far one of the greatest places for an in-depth introduction and continued education of Brazilian jiu jitsu. If you're interested, consider coming in for a trial class and see for yourself if the gym and sport is right for you!

Amazing gym! I used the two day free trial and had a blast boxing with coach Mitch and learning…read moresome grappling skills with coach Mike. Everyone was respectful and did not waste time.

I've been coming here on and off since May 2022, and I LOVE it!…read more This is my first time joining a fitness club/attending classes (outside of 24 fitness) :} and I'm so glad I started at Koa (shout out Cedric!) Joining anything new can be intimidating, especially a fitness class. However, everyone, and I mean EVERYONE is SO nice and welcoming - Koa staff (morning and night), all the different coaches and other people attending the class. Anyone with any level of experience is welcome. You can ask anybody for tips and help, and they will patiently guide you! I usually join Boxing and Muay Thai. I have yet to join Yoga, and I'm trying Jiu-Jitsu for the first time ever tomorrow :)

We came in as potential clients for the youth classes and we were shocked how disorganized the…read moreclasses were. There was no seemingly structure. I think there are too many kids with different status (beginner vs advanced) and age ranges 4-16. When they broke into drills there was an instructor showing the 6 (ish) year olds the drill and then walked over to the older kids with another instructor. I was baffled. How do you leave little ones to do a partnered hitting drill by themselves? There were 5-6 instructors but they seemed to talk amongst themselves and not demonstrate or monitor the kids. Sandy stated they have students completing their degrees, who need hours coaching. So basically, volunteers who don't care. I'll keep my money. They need to reevaluate their business model and hire dedicated coaches.

My son has been a part of WCWMA for 5 years now since he was in 1st grade. He's now in 6th grade…read moreand a red 1 belt. The teachers are great and KJN Dave truly cares for the students. Looking forward to my son getting his black belt soon!

This place is amazing martial arts school. my daughter has been here 2 years, she was really…read moreenjoys the Classes The owner is Dave His is really kind Whoever has the kids I highly recommend come to here

Great class. High energy and very patient teachers for all levels. They take the time to answer…read morequestions demonstrate and focus students to achieve their best.

it's a great place to learn selfdefense and meet other. I have made some friends while I have been…read morethere. it's a great place to send kids.

Anthony sir is absolutely the best, we love attending class to watch how he makes learning fun!…read moreCommendable technique , execution and tons of patience:) Teaching a form of martial art is certainly no child's play..we look forward to seeing disciplined, confident and motivated children as a result of his playful, structured and professional format! His humor, wisdom & enthusiasm rubs off on the kids too:) thank you for your energy and dedication, we honestly appreciate your spirit to provide this clean environment for the future of tri-city! Kudos to growing in the Bay Area by leaps and bounds :)

Great place to train and learn from very knowledgeable instructors. The new Dojo is clean and well…read moreequipped. Head instructor has a perspective and real approach. Worth the time to check it out!

We absolutely love Chris Jones Jiu Jitsu! Enrolling my daughter has been one of the best decisions…read morewe've made. Since she started, we've seen such an incredible improvement in her confidence, patience, and discipline--skills that extend far beyond the mats and into her everyday life. Every single coach is truly amazing. They are patient, encouraging, and genuinely care about each child and their growth. They create such a positive, supportive environment where kids can learn, build confidence, and have fun while being challenged. We are so grateful for everything they've done for our daughter, and we couldn't recommend Chris Jones Jiu Jitsu highly enough. If you're looking for a place that truly invests in your child's development, this is it!

My daughter and husband love this place! The classes for kids are great! My daughter has been…read moretaking them for a few months and she loves them! She's made new friend and everyone is respectful. The staff is great, they know each kids name. They also have this awesome rule where parents are only allowed to watch the last week of the month to see the progress tour kid has made. Another awesome rule is that parents are not to get involved or give instruction to their kids. If you do, you will be told. I love this! You don't have to deal with any obnoxious parent trying to direct their kid. This place builds confidence and teaches. My husband loves the adult classes. The people are progressing and the environment is friendly. Make-up classes are allowed. They also have a Zen planner app where you can reserve your spot. The place looks clean and there is plenty of parking. Prices are reasonable. I would recommend this place for adults and kids. It's a great place with awesome staff.

Professor Mauricio has always been a great friend including many of his students who I've met. He…read moreteaches Brazilian jiu jitsu, boxing and kickboxing classes. His academy is family oriented and always very welcoming. I also love how Professor Mauricio teaches us martial arts and self defense but also gives us his best advice about life so that we can all grow as a person. I still remember a lot of his teachings to this day. I highly recommend this place to everyone of all ages!!!

Started BJJ for my daughter and now she loves it. Joo Gee SOO as she would call it. I can see the…read moreconfidence in her growing. The instructors who teaches the 3-6 year old class are perfect. They take their time in making helping the kids get comfortable. I love how they took their time with my daughter on her 1st day. This place is very well family oriented and Mauricio is a train fighter.

My son started here when he was just 4.5 years old, and by age 9, he earned his Black Belt. Even…read moreafter reaching this amazing milestone, his passion for Taekwondo is stronger than ever as he continues to train toward his 2nd Dan. Seeing his long-term dedication speaks volumes about the quality of instruction and culture here. Master Nila is exceptionally skilled, patient, and truly cares about the students. The instructors know exactly how to instill discipline, focus, and confidence in kids at just the right stage in their development, helping them grow both on and off the mat. We love the environment so much that my daughter recently joined as well. Both of my kids look forward to every single class and are having a fantastic time learning together. If you're looking for a martial arts school in Fremont that offers excellent instruction, builds strong character, and feels like a welcoming community, Mach Martial Arts is the place to be!

We started at Mach Martial when my daughter was 5, and it's been such a wonderful journey watching…read moreher grow from a little tiger.. We are so grateful for the valuable teachings from Master Nile and Master Sunny over these two years. While Taekwondo is often associated with physical fitness and martial arts, I truly appreciate how they weave in important life lessons. There's always a thoughtful "topic of the week," and they consistently incorporate it into each session in a meaningful way. The environment is warm, welcoming, and incredibly organized. The instructors are always available to answer questions, and the assistant instructors deserve a huge shout-out as well--they are so encouraging, motivating, and patient with the kids. This has been our favorite after-school class so far, and we couldn't be happier!

All three of our kids have been training at Confidence Dojo for the past three years, and we…read morecouldn't be happier with our experience. Master Fong and Master T are truly wonderful instructors--they are incredibly kind, knowledgeable, and patient with children of all ages. Under their guidance, our kids have not only grown in skill but have even achieved medals in tournaments! Beyond the physical training, this dojo excels at teaching life skills. I highly recommend Confidence Dojo to any parent who wants their children to learn self-control, discipline, and practical self-defense in a supportive environment.

My kids have been going here for about 6 years. They love it and we recommend Confidence Dojo.read more

Our family has benefited so much from the community at Dragons Den MMA! From the moment we joined…read morein 2025, we've felt nothing but Ohana, love, and a genuine sense of belonging. My son attends Kajukenbo on Tuesdays and Thursdays from 5:30-6:30 PM, and I've taken full advantage of the fitness classes offered during the same time. I'm incredibly grateful for the knowledge, guidance, and encouragement shared by the leaders at Dragons Den. It's been such a blessing to have an opportunity to invest in my own health and wellness while my son does the same. What makes Dragons Den so special is that it goes beyond the gym. The confidence my son has gained through the encouragement and support of this community has been amazing to witness. From the classes to the activities outside the gym, including the women's self-defense class that I've truly enjoyed, there are so many opportunities to grow, connect, and build meaningful relationships. Dragons Den is more than a martial arts gym - it's Ohana! We're so grateful to be part of a community that pours into its members both on and off the mat. If you're looking for a place where you and your family can grow stronger physically, mentally, and emotionally while being surrounded by people who genuinely care, Dragons Den MMA is the place to be!

I enjoyed the Structure and environment. The atmosphere was very calming and instructive. My…read morechildren learned a great deal.