★ 5

I’ve been attending classes with Erik for a few weeks now and I have a feeling I will be for a long time lol. I was nervous about attending a class but everyone was very kind and welcoming, had a blast!

Source: Google

★ 5

Love this place! The workouts are quick, intense, and always different. The coaches keep the energy high and really care about your progress.

Source: Google

★ 5

UBX Old Greenwich is great! Fast moving and fun! Erik is a fantastic coach and stays on you so you get the best workout! All the coaches are great though. Can’t go wrong. And I love that I can show up whenever I want without having to worry if I signed up or not! No wait lists or last-minute cancel fees to worry about. It’s a great concept!! Love it!

Source: Google

★ 5

I had to update my review unfortunately. As the trainers are polite and professional, the same cannot be said from a customer service perspective. The follow up takes days, I had to reach out several times on more than one occasion to get a clear answer or update. As much as I enjoyed the workout experience, I did end my membership and it was a very disorganized process. Great staff but there is room for improvement!

Source: Google

★ 5

This is the best gym ! I get an amazing workout and all the trainers are super supportive

Source: Google

★ 5

UBX quickly became my favorite workout. Eric and the rest of the team at UBX are so great. I love not worrying about class start times and just showing up whenever I am able, while still knowing I will have the motivation and knowledge of a trainer there.

Source: Google

★ 5

Amazing coaches and training, totally worth it

Source: Google

★ 5

So happy to have joined UBX! The flexibility of the scheduled, mixed with the fun yet challenging workouts make for a perfect experience. I always leave sweaty and feeling like I got my money’s worth. The coaches are approachable and super helpful. Highly recommend UBX for anyone looking for a flexible, fast and effective workout in a community setting.

Source: Google

★ 5

Source: Google

★ 5

Great workout, and I’m having fun doing it. I’ve seen immediate results.

Source: Google

★ 5

This place is awesome. great full body, HIT workout. 25% boxing , 75% full body weight training workout with coach assistance full time. Please try - you won’t regret. $5 trial. Coach Eric is the best.

Source: Google

★ 5

Source: Google

★ 5

UBX Old Greenwich is a great workout! The coaches are incredible—so supportive, knowledgeable, and genuinely focused on giving real instruction. Whether you’re new to boxing or experienced, they meet you where you are and help you get better every time.

The workouts are fun, high-energy, and a great mix of boxing and weight training. I love that it’s not just cardio—you actually build strength, too. One of the best parts is the flexible schedule. You don’t have to wait for a class to start—you can just show up during extended hours and jump right into your workout. It’s super convenient and perfect for a busy schedule.

Source: Google

★ 5

I love coming to UBX. The location is so convenient and the workout is efficient and impactful. All of the coaches keep the workout engaging and bring such a fun, motivational energy. The gym is also clean and the equipment is new. The workouts change each week so I never get bored.

Source: Google

★ 5

Love this place!!!!

Source: Google

★ 5

UBX truly is the best! It's clean, well-equipped, and has a great atmosphere that makes you want to show up and put in the work. The flexible hours are a huge bonus, making it easy to stay consistent no matter what your schedule looks like.

I've been training with Erik for several months now, and I can confidently say it’s been a game-changer. Whether you're a beginner or someone looking to level up your performance, this is the trainer you want in your corner. He brings nonstop energy and focus, and you can tell he genuinely cares about your progress.

I highly recommend UBX for anyone looking for a top-tier trainer and a gym that supports your growth every step of the way!

Source: Google

★ 5

Source: Google

★ 5

UBX is OG is very convenient - and kicks your ass (in a good way!) It's 45 mins strength and cardio - not all of it is boxing! The different stations change so the workouts are varied. Erik is a great motivator and coach. Highly recommend

Source: Google

★ 5

Fantastic workout! Efficient and fun. The coaches are knowledgeable and attentive and make sure that you’re getting the most out of your workout. Coach Erik is especially great — he takes the time to really understand your goals and your individual needs and makes adjustments accordingly. Highly recommend!

Source: Google

★ 5

Love UBX!!! Feeling incredible with the workouts and support from the staff. Thoroughly enjoy going and each day is a different set of circuits. Very enjoyable.

Source: Google

★ 5

Such a great place to work out. Amazing coaches work with you through each station. You can go at anytime, no need to sign up to a class or wait for a class to start. You go when it’s convenient for you! You get a great workout in 45 minutes! I also love the heat rate monitor to keep track your pushing yourself! I highly recommend!

Source: Google

★ 5

Been going to UBX in Old Greenwich for a few months. Love the classes and all of the instructors! I love the concept of 12 stations for 3 minutes each, it’s a good workout!

Source: Google

★ 5

Source: Google

★ 5

Great addition to OG as it offers a timed / challenging full-body workout mix of boxing, lifting, cardio, with flexible start times. The coaches are very knowledgeable, personable, and motivating…all you have to do is show up and work hard!

Source: Google

★ 5

Great workout and a fantastic team! Erik, Topazio and Jimmy (the early morning crew) are all amazing coaches who really pushes you to your limit. I really enjoy the full body workout and the high intensity, 45 minutes and I'm done for the day! And given that exercises are continuously rotated and switched every day, it never feel monotonous. Highly recommend to anyone looking for a fast-paced workout while coached by a highly motivating team!

Source: Google

★ 5

Phenomenal staff, great HIT training. Excellent work outs and environment.

Source: Google

★ 5

UBX has been an excellent addition to Old Greenwich. They offer fast paced 45 min workouts which are fun and challenging. Coaches are super friendly and knowledgeable , always there to offer guidance and monitor form. They also offer private and small group sessions. My teenage daughter has just completed an 8 week sport specific small group program and has absolutely loved it. Signing up for more given the progress being made. Would highly recommend checking it out!

Source: Google

★ 5

As someone who’s never gone to the gym or even exercised for that matter - UBX was the perfect mix of boxing (which I’ve always wanted to try) and interval training which has helped me in finally building strength and stamina …and mostly finally got me exercising. All the coaches are great and very knowledgeable but I especially appreciate Jimmy who manages to push me but always with great patience & guidance.

Source: Google

★ 5

UBX offers a great mix of boxing (one-on -one pad work, heavy bag, speed bag…) with plenty of other challenging elements mixed in a 45 minute stretch! The trainers have all been very friendly, attentive, and focused on getting max results and keeping good form.

Source: Google

★ 5

Mighty oaks from little acorns grow. UBX has managed to maximise its intimate space to deliver incredibly impactful workouts. With fresh drills daily, a comprehensive selection of training tools and a great playlist to keep you motivated, it’s a no brainer when it comes to staying on top of your fitness goals. Massive shout out to Erik, who always manages to keep us accountable with his charismatic and supportive style of teaching!

Source: Google

★ 5

I’ve been training at this gym for the last 3 months, and it’s been a really positive experience. The equipment is all brand new, and the workouts are designed for a solid full-body burn every time. The coaching is excellent—there’s always someone there to push you, correct your technique, and answer any questions you have. On most days, I train with Jimmy—he’s very supportive and suggests adjustments based on your personal goals. I’ve also trained with Daniel, Topazio, and Eric, and they’ve all been incredibly knowledgeable and encouraging.

Another big plus is the flexible class timings, which make it easy to stay consistent even with a busy schedule. I’d definitely recommend it to anyone looking to stay consistent and see real progress.

Source: Google

★ 5

Excellent gym with the best staff. I love the motivation the team gives and how they have helped me so far go beyond my own limits. I had doubts, but since joining I am more motivated to come back and improve week after week. 100% would recommend.

Source: Google

★ 5

Cannot say enough great things! Such a great addition to OG. The workout is challenging, yet adaptable for all levels. The best part...Erik. AWESOME coach. Always there to push me, correct my form, but best of all to keep me motivated throughout my workout. And he doesn't shy away from a challenge :) Excited to have UBX incorporated into my weekly routine.

Source: Google

★ 5

42 minutes of high intensity workout with a circuit that changes every day. Come in and start anytime - no need to book a class. Best part is the semi-private coaching to teach you proper form and get you going through all stations. Big thank you to head coach Erik and the whole UBX staff!

Source: Google

★ 5

Ok so, you’re reading all these great 5⭐️reviews and thinking seriously. Well it is all true and even more. The people, the program and the environment all come together for a great experience / workout every time.

Source: Google

★ 5

All staff in UBX OG are so friendly. As per my experience, they treat everyone equal and like a family and thats a very comforting and welcoming feelings, made me go back there over and over again. I remembered when I first went there, Erik was the one who assisted me, he’s kind, patient, and supportive, that every time I said “I cant do it” he keeps saying “YES YOU CAN!”… and that positivity is one of his inspiring qualities. Thank you all!

Source: Google

★ 5

I love my workouts at UBX. They are fast-paced, fun, and different every time. I am new to weight training, and while I found that part of the workout a little intimidating at first, Erik and Jimmy broke it down for me, and with their help and encouragement, I feel that I've made great progress since I started. Now I really look forward to it. I especially like the boxing rounds and mitt work with the trainers. They are professional, friendly, encouraging, and experts at what they do. Thank you, UBX!

Source: Google

★ 5

Love training at UBX Old Greenwich! Erik is an awesome coach — super motivating, always brings great energy, and really knows how to push you while keeping things fun. I’ve made real progress thanks to his coaching. Highly recommend!

Source: Google

★ 5

UBX is the perfect place to get the workout you've always wanted. The mix of HIIT and boxing adds something most traditional gyms lack. The trainers are excellent—shoutout to Erik, an exceptional coach! Highly recommend giving it a try—you won’t be disappointed.

Source: Google

★ 5

Love it here. The flexible start times make my life so much easier. The instructors are all great and really help you work towards your fitness goals. Ive worked primarily with Erik in the mornings who always pushes me to work harder, even when I don’t like it. Daniel is also a great instructor, Jamie is a good nutrition resource, and Topazio does a crazy booty bootcamp. So far so good and I have definitely noticed an improvement in my strength in the couple months that I have been coming here.

Source: Google

★ 5

This place is amazing and I almost don’t want to put a review because I’d like to gatekeep it. Erik makes the workout so fun and I know I’m going to get so much stronger from it. Love it!

Source: Google

★ 5

You will dread, and love, training with Erik! A very fast and efficient 42 minutes with variety in each circuit that keeps the time interesting each day. I highly recommend UBX for an energetic and challenging workout.

Source: Google

★ 5

I don’t usually write reviews, but I had to for UBX Greenwich—it’s truly a hidden gem. I’ve been boxing for over five years, and since moving to Connecticut I hadn’t found a gym that felt worth my time or money. That changed the moment I found this place. After the very first session I knew this gym was different. The workouts are intense and fun, the boxing training is actually VERY good but what really sets this gym and workout apart are the trainers, especially Erik.

Erik is one of the best boxing coaches I’ve ever worked with. He pushes me every session, gives a lot of one-on-one attention, amazing and challenging mitt work, creative combos, and even helps tailor some of the workouts to support other things I'm training for like soccer or HYROX. You can tell he really cares about everyone in the class and is so amazing at what he does.

This gym is a diamond in the rough, and I’m so grateful I found it—and especially that I met Erik, working out here has become the highlight of my week.

Source: Google

★ 5

This is the workout I’ve been wanting forever- it’s challenging, it’s ever changing, keeping it fun and engaging, and I can already see and feel results in a month of training. The community is so supportive and friendly and the coaches are always available. It feels like a combo of group and personal training. Erik, Daniel and Topazio are all incredible coaches who make training fun and challenging. They push you to train harder but always within safe limits. Most of the days I go Erik is coaching and he is so fun and motivating and he makes you WORK! The biggest selling point for me was the format- the gym is open for “open hours” and I can walk in and start anytime without those hours. No more worrying about missing a class because my morning schedule with the kids was unpredictable. It’s 12 3-min stations. You get in, get out. It’s hard but it’s such an empowering experience.

Source: Google

★ 5

Great mix of cardio and strength training. Love doing this first thing in the morning before the kids are up. Also, the coaches really motivate you to give it everything. Coach Erik motivates you like no one else and makes sure you never cheat in your form. Overall, great workout. Highly recommend.

Source: Google

★ 5

i love how motivating it is and how there's different workouts everytime i come in. Eric is so motivating for me and hes my favorite coach!

Source: Google

★ 5

Great and clean facility. Trainer's are well established, especially in the morning. Erik is amazing and knowledgeable.

Source: Google

★ 5

My favorite workout! Love the 12 different stations, the flexible start time, and the trainers are great- very knowledgeable and helpful with technique! Would recommend for anyone looking for a challenging HIIT workout

Source: Google

★ 5

I love it here! I get a great workout every time and have great trainers that are patient, motivating, and challenge me the whole time so I don't slack off. Thank you Jimmy and Danny for making the class fun and for the awesome playlists too! 😂

Source: Google

★ 5

UBX has proved to be such a positive experience for me. Great professional snd knowledgeable staff who know how to motivate and make training fun. Topazio is patient, encouraging and a stickler for form to prevent injury. I highly recommend UBX for your fitness goals and real results!

Source: Google

★ 5

Great workout today!

Source: Google

★ 5

I have had a great experience at UBX. The staff is very helpful and supportive. I have also enjoyed the flexibility that the rolling start times offer. Highly recommend.

Source: Google

★ 5

I can’t say enough great things about this boxing gym - the rolling start times so you will never be late for a class, the proximity to the train station & ample parking, the brand-new equipment, as well as the high-intensity/recovery style of training. These tick all the boxes.

The coaches are not only highly knowledgeable and experienced, but they genuinely care about your progress—whether you're a beginner or a seasoned gym-goer. Every class can be as intense as you want it to be, the coaches motivate you and the framework is structured to help you push past your limits.

The gym is always impeccably clean & the community is incredibly supportive. You feel like part of a team from day one. I’ve seen real improvement in my fitness, weight, and confidence since joining. If you're looking for a place to train and reach your goals, this is the choice you should make! There are plenty of fitness places on Sound Beach, this is the newest & in my opinion the best of the lot. A special mention to Erik, he is there everyday at 5.30am to open up and full of energy & motivational soundbites all morning!

Source: Google

★ 5

Erik is an amazing coach!! So helpful and encouraging, Always pushing his clients to feel their best. Everyone should come see him at UBX!!

Source: Google

★ 5

Wonderful gym! Love the open start hours and the attentive coaching, they are right there to push you harder and support you! Erik is amazing- helpful and constructive, makes the time fly! Highly recommend

Source: Google

★ 5

Amazing workout—high energy, great coaching, and seriously fun!

Source: Google

★ 5

Walking into UBX was such a pleasant experience, the trainers made my workout fun while still challenging me. I love the mix of boxing with high intensity workouts - you burn so many calories while getting to hit bags! Highly recommend! I/

Source: Google

★ 5

very convenient location right by the train station! perfect workout spot for before and after work, and the instructors are always there for you without being tied to class times 👍🏻 great concept

Source: Google

★ 5

They'll help you reach your goals at your own speed.

Source: Google

★ 5

I am thinkinking of going North from Miami and I know UBX will be my number 1 working out spot to go. Can't wait to work out there!

Source: Google

★ 5

Very efficient full body workout with coaching — a mix of boxing lifting polyp cardio. Facility has brand new equipment and conveniently located by town and train. A variety of membership options that are flexible. Love that it’s a rolling start time too.

Source: Google