Incredible gym and better community! The coaches and team at Arsenal are incredible. Providing strong programming and support would recommend the team here to anybody looking to improve their fitness needs!

I spent two great years working out in this gym. I was nervous about starting CrossFit and all the coaches here took their time to help me along the way. I met some friends and had a blast. I highly recommend this gym to anyone regardless of their fitness level. There is something for everyone here.

I had never touched CrossFit or done any lifting. I was a newbie to the max. I did some general exercising, but nothing solid — fitness wasn’t my thing. The first time I arrived at class, I was really nervous and was afraid I was so out of my league... Little did I know, not only would I feel comfortable at the level I started, but I would go on to do things I never thought possible. Every time I went to class, I surprised myself. After 5 years, I can say this gym changed my life. I stand differently, I am stronger physically and mentally. The people in this gym are just — the best. It’s the people who made me feel like I belonged, simply because I showed up. You feel like you’re part of something good, something great — and it just feels so good to make that part of your day, your life. Every rep counts. Effort over placement. I learned to appreciate my own path and growth, all while having the best camaraderie and support. And we had the BEST parties!!! Best gym ever. I miss it every day. If you're thinking of trying it — DO IT. Show up. Effort over placement.

CrossFit Arsenal - More Than Just a Gym, It's Family! ⭐⭐⭐⭐⭐ From the moment I arrived in the US, joining CrossFit Arsenal in Watertown was one of the best decisions I made. It instantly became my home away from home, and I've thoroughly enjoyed every single aspect of my time here. The classes are well-coached and engaging, pushing me to new limits while always ensuring proper form and safety. Beyond the daily WODs, the specialized seminars offered invaluable opportunities to deepen skills and knowledge. CrossFit Arsenal is so much more than just fitness. The parties and social events were always a blast, a testament to the incredible community here. The crowd is genuinely fantastic – supportive, encouraging, and full of wonderful people from all walks of life. This isn't just a gym; it's an Arsenal family, and I'll carry a piece of it with me always. Highly, highly recommend!

Arsenal has been an awesome place for fitness and camaraderie. Solid facility, friendly and knowledgeable coaches, and a great community. Highly recommend if you’re looking for place to check out or continue on your CrossFit or Jiu Jitsu journey!

Dropping in from out of town. It’s a really solid gym and has everything I needed. Jason is awesome and very welcoming. Will definitely be back!

When I was looking to join a new gym nearby, I relied heavily on Google reviews to learn about this place. Now, after a year of training here, I can absolutely confirm what everyone said - the community here is incredible! The coaches are knowledgeable and supportive, the space is well-equipped, and they regularly host events that bring everyone together. I've joined their BJJ classes too, which maintain that same amazing community vibe. Would recommend to anyone looking to start their fitness journey. P. S. This photo is from a recent weightlifting seminar!

CrossFit Arsenal has been home gym for close to a decade now. I lost a bit of weight here while getting stronger, faster, and more importantly, healthier. It’s a great place to be if that is also your goal. This gym is set up with multiple CrossFit classes if you don’t what to do with programming or workout. A lot of people do come in to do their own workout too. Pictures included a picture of us learning about Olympic Weight Lifting.

Arsenal is one of my favorite places on earth, and is an incredible community of inviting and motivated people! Attending classes at Arsenal guarantees you will have at least one great hour every day, and will provide you with an opportunity for personal growth across multiple facets of your life. The staff at the gym are top notch people who will always go out of their way to make sure your experience is positive, and according to my parents the owner Jason was “a very charming man” when they saw him on local news. Going to the gym is a great way to get out of your comfort zone, meet new friends and make small improvements every day!

I love coming here! I came to drop 10lbs to fit in my wedding dress to zip. I did that and i stayed for the community. The music is great the workouts are tough. Emily, Seth and Jason are great coaches that really watch and to the best of their ability make sure you don’t get hurt. I still manage to walk into walls … I really like how they push you even though i find it rude that Jason told me i had to actually bend my elbows to do a push up

I will ALWAYS love Arsenal. This was my gym from 2014 to 2023, and I miss it every day. My husband and I moved from the city, and the ONLY hard part about leaving was needing to leave this gym. We miss the community, the people, and the incredible efforts that Jason, Seth, Emily, and all of the coaches here put in to make this such a special gem of a community and fitness house. The coaching team here is exceptional in ensuring the safety of each member, while encouraging everyone to do what is best for their workoit each day. Tim & I have found a new gym that reminds us of Arsenal, but there will never be another. I look forward to coming back whenever we can for a drop-in class or for one of their many bbq's. Thank you for creating such a special, inviting, beautifully strong space, Jason.

If you are living in the Boston area and deciding which gym to join I highly recommend CrossFit Arsenal- Fitness and Jiu Jitsu. The classes facilitate friendly competition and a sense of community. The programming is challenging for a veteran athlete, while also being highly customizable for all fitness levels and all walks of life. What sets this gym aside from other gyms is the authenticity of the down-to-earth coaches and members. It’s hard to beat the value of this place, with classes and open gym 7 days a week (even on holidays)!