My son has been coming here for a few years. I can't say enough good things about Mike, Karen and…read moretheir staff. It is a clean dojo, with a warm environment. It is obvious they know what they are doing, building the intensity as the kids show progress. While the physical part is great, and I have seen grows in my kid's abilities, the life lessons are where they have this place dialed. Little nuggets of wisdom the teachers sprinkle, encouraging the students. Also they have a very substantial teen cohort which tells me they have the right formula.

Absolutely wonderful martial arts studio, with the best sensei and staff. Physical and mental…read moreintelligence training with a load of fun on top. 100% would recommend!

I'm over 40 and was looking for a place where I could train often, push myself, and still stay…read moresafe. Black Sheep Jiu Jitsu has been exactly that. The teaching is super high level, but the vibe on the mat is welcoming and safe enough that I'm able to roll 6-7 days a week. There are tons of black belts and brown belts here--Levon, Derek, Alex, Evan--who make every round tough but also take the time to help you get better while you roll. Coach Wolf is amazing with both technique and rolling, and Cole is awesome with the no-gi classes. Big shoutout as well to the morning crew--Noah, Nico, and Tyler--who make early training something to actually look forward to. This place is packed with knowledge, great people, and positive energy. If you're looking for a spot to improve and have fun on the mats--whether you're young, competitive, or just trying to stay sharp past 40--Black Sheep Jiu Jitsu is the gym

Incredible gym. I train primarily kickboxing with Noah and I'm incredibly impressed with his…read moreteaching ability. I have advanced considerably even as a 41 year old under his direction. My BJJ game has also drastically improved. Everyone here is more than willing to help a white belt like me get better and better. I have a lot to thank the crew for. Oss!

We've been coming to North Bay Jujitsu for almost a year now, and we couldn't be happier with our…read moreexperience. Our son has been training with Coach Paolo since the beginning, and we truly appreciate his coaching style. He is firm yet kind, patient yet structured. I find it to be a perfect balance between discipline and fun, while creating a positive environment where kids can thrive and grow in both skill and confidence. More recently, Coach Sonia began assisting with our son's Monday class, and she has been a fantastic addition.

I joined North Bay Jiu Jitsu with prior experience in the sport, and initially, I was excited to be…read morea part of the community. The people were welcoming, supportive, and the atmosphere was friendly. The art of jiu jitsu is something I have always loved, as it teaches patience, respect, and self-defense. However, my experience at North Bay Jiu Jitsu was marred by a recurring issue that eventually led to my decision to cancel my membership. After about two months of training, I started getting sick almost like clockwork. Every two to three weeks, I would come down with a bad cold or a similar illness. Given that I was working from home and rarely going out, I began to suspect the source might be related to my jiu jitsu classes. I tried immunity boosters, vitamins, and other supplements, but nothing seemed to help. After my third bout of illness, I decided to take a closer look at the cleaning practices at the gym. I arrived early one day and observed what happened between classes. After a kids' class had finished, I saw one of the instructors take a large dust mop (the kind you might see in a grocery store) and quickly drag it across the mats. No disinfectant was sprayed, and the mop head wasn't changed. It was a brief and superficial cleaning process, to say the least. This was concerning because the mats, where we were constantly in close contact with each other's sweat and bacteria, were clearly not being properly sanitized. It suddenly made sense why I was getting sick so frequently. I decided to cancel my membership shortly after that incident. When I explained that my frequent illnesses were the reason for canceling, the response I received was polite but did not address the issue I raised-- there was no real acknowledgment or inquiry into the cleanliness practices or my health concerns. Since switching to a new gym, I have remained in good health. I'm writing this review to bring attention to an important issue that I believe needs to be addressed. The art of jiu jitsu is wonderful, and the community at North Bay Jiu Jitsu is full of kind and supportive people. However, cleanliness is crucial in a sport that involves such close contact. Gym owners and instructors have a responsibility to prioritize the health and safety of their members, and that includes maintaining proper hygiene practices. For anyone considering joining, I hope this serves as a helpful forewarning. Make sure the facilities you train in are prioritizing health and cleanliness, especially in such a physically intimate sport.

This is a beautiful new judo dojo in Marin with a first class training area and many other fine…read moreamenities. Sensei Daniel Barboza is a world class judo instructor with vast experience as a national and international level competitor, and has comprehensive knowledge of judo as both a sport and martial art. Sensei Barboza has training and education in strength and conditioning, and has competed successfully in Brazilian Jiu Jitsu. I would highly recommend this dojo to anyone with an interest in judo.

From the owner: Discover the Excellence of Kaizenkan Judo in Marin County!…read more Welcome to Kaizenkan Judo, where tradition and innovation come together to provide the best martial arts experience. Located in San Rafael, Marin County, our academy is renowned for offering a welcoming and professional environment for practitioners of all ages, with a special focus on children. With years of experience, our team of highly qualified instructors is committed to passing on the values and techniques of traditional judo. At Kaizenkan Judo, we value discipline, respect, and personal development, ensuring that each student can reach their full potential. We understand the importance of quality education from an early age. That’s why our children's programs are carefully designed to be engaging, fun, and educational. Our instructors are trained to work with children of all ages, promoting a safe and stimulating environment where they can learn and grow. Kaizenkan Judo prides itself on being a second home for our students. Our dojo is a space where everyone is welcome and respected. We encourage a spirit of camaraderie and mutual support, creating a strong and united community. If you are looking for a judo academy that combines tradition, experience, and a welcoming environment, Kaizenkan Judo is the right place for you. Come visit us and discover how we can help you or your child develop valuable life skills. Join us at Kaizenkan Judo and be part of a tradition of excellence!

Fantastic, stylish, and very clean facility! The staff is friendly, the equiptment top notch, and…read morethe instructors in fitness and Jiu-Jitsu (World Champion Woolf Barnato and top level BJJ blackbelt Julian Marquez) are EXPERTS in their fields. HIGHLY RECOMMENDED!

Woolf and Julian are the greatest guys you can find out there, their BJJ is highly recommended if…read moreyou wanna be a world champion and if you just wanna have some fun on the mat you will find yourself on the right place.

Fun, friendly one big happy family! Check Napa BJJ out if your looking to get healthy learn some…read moreJiuJitsu clean safe enviorment.

Been with the school for years. Love the people here. Nice people, great instructions, good times…read more Know your roll.

Old School Martial Arts has been an incredible experience for our family. My 8-year-old daughter…read moreand 5-year-old son have been going there since August 2025, and we have been so impressed with the positive impact it has had on both of them. They create such a great learning environment for kids. The instructors teach excellent techniques in a way that is engaging, supportive, and age-appropriate, while also maintaining high standards. The school does a wonderful job of making it both safe and fun, and it is filled with so many great kids. The owners are clearly highly invested in making it a great school, and that really shows in every aspect of the experience. The space is always clean, it is well priced, and it truly feels like a worthwhile investment in our children's self-discipline, self-defense, and confidence. We are so grateful to have found Old School Martial Arts and would highly recommend it to any family looking for a positive, supportive, and empowering place for their kids.

I love Old School Martial Arts! The community is great. Everyone is friendly. No one has a huge…read moreego. Isaac and Andrew are great coaches. They understand the importance of fundamentals that so often get overlooked at other gyms. This place has helped me a lot in so many ways, even during one of the most challenging times in my life. This is a place to learn self defense, be a part of a community, overcome personal challenges, get wisdom from coaches and peers, stay in shape, and express yourself on the mats.

Best Jits gym in the city for sure. Very welcoming and understanding. Alex and Gianni host such a…read morepositive and healthy training environment. You can tell they really care about their students. A great place to meet kind and motivated people while improving upon your jiu-jitsu.

Coach Alex is a fantastic coach! He's a legit martial artist. Over the last 14 years I've known…read moreAlex, he has shown me techniques I use to this day. Without Coach Alex, I wouldn't have the jiujitsu game I have now. I would highly recommend anybody who wants to improve their martial art skill set, beginner or seasoned. His school also offers striking classes with a wonderful striking coach, Johnny. I'd highly recommend this gym!

We were one of Baldwin's first customers and initially sent our kids to two classes. After that,…read moreour schedules didn't align, so we came to an agreement to freeze our account. Recently, I wanted to send our kids back, and Baldwin asked me to call to find a solution. However, instead of working toward an agreement, he was dismissive, unwilling to resolve the situation, and ultimately disrespectful. I'm actually glad we experienced this side of him now--because we would never want to expose our kids to someone who acts this way. If you run a business, respect should be at the foundation. Being bossy or disrespectful is not how you treat customers, and it's certainly not how you run a business.

Super stoked for Baldwin to be opening his own gym! Met Baldwin through a teammate while he was…read morevisiting Honolulu. And let me tell you, you better bring your A-game at all times. Super sharp technique and competitive rolls. He's also super down-to-earth, approachable and an overall nice guy. Baldwin is also a tried and true competitor and you can tell by all the competitions he has done. It would be so dope to be a part of a gym like this with a head instructor of his caliber. Looking forward to dropping in when I'm back in the bay. Ossssss!

My son just turned 8 and joined Hercules BJJ. He loved his first week and hasn't looked back since…read more He's been in a few tournaments within a short period of time and has learned invaluable lessons preparing and competing. Coach Sean and Coach Gabe have done an excellent job in teaching him the art of BJJ. My son says he will ALWAYS practice and looks forward to it on a daily basis. Sean has a strong work ethic and is very technical. He is an awesome teacher and a great leader for these kids. He lives by example. Also, my husband who just turned 40 has joined as well and competed successfully. My youngest son can't wait to join when he's of age. Thank you HBJJ!

I can only say nice things about this place. We've been to a few kids' martial arts school around &…read moreI usually force my kids to go to their class. I was surprised, the kids willingly wanted to go to Coach Sean's class. They made good friends with the kids there, I've witnessed great progress with their BJJ techniques, I've seen their head coach's support for his team. The kids and adults compete on tournaments (if you are into competing) and they train you to win. I've tried their adults class too, and I am impressed how Coach Sean teach all the techniques and details. Definitely highly recommended! Their prices are reasonable too!