I can't speak to what it's like to be a member here, but as an out-of-towner who needed a gym to go…read moreto for the day, I highly recommend this place. They offer day passes for $10. It's a no-frills environment - there's a TV in the cardio area but that's about it - but everything is clean and in good shape. It definitely feels like a place for people who are serious about their training, more so than your typical Globo-gym. The equipment is in good shape, and they have lifting platforms and bumper plates! I would be a member here if I lived in the area.

Excellent facility. Every kind of machine available. Some classes. Child care available at times…read more Experienced and very helpful staff!

Incredibly friendly and motivating gym. Coleen and the other trainers are so welcoming and…read moreknowledgeable, always able to suggest alternative ways to work out that fit my needs and ability. I'm not a gym person, but I've become one because of this particular F45. Highly recommend you at least try it, people!

Great team, super supportive, and extremely caring…read more Highly recommend this for anyone that is looking to either start out or just wanting to push themselves to a new level. I used to own my own gym and have always had trouble finding another gym that I enjoyed - but this spot is my new jam lol.

Have been training with Ben for about 18 months. Not only is he super knowledgeable as it pertains…read moreto all things fitness, he's also very keen on posture, stretching and helping all of us make sure we do the exercises right and not hurt ourselves. Thanks to his classes and instruction, my fitness level has dramatically increased and I no longer have any pain in my left knee, a problem I had been dealing with for years. I definitely recommend and vouch for Ben and hope all of you reading this give his classes and personal training sessions a chance.

So I started training with Ben just over a year ago. When I first started I was just working out…read moreon my own trying to eat properly, I lost about 45 lbs. Then I felt as if I hit a plateau and reached out to Ben for help. Since I have lost over an additional 50lbs. With Ben's knowledge he taught me how to eat properly, count my daily intake on foods and how to work out without getting injured. I continue to strive to reach my goal with the success of Ben's knowledge. I work out with him 5 days a week with his 20min HITT classes. I was one who kept telling myself I can't do this, and here I am a year later kicking butt. It's a life style change and I am greatful for having him as my trainer. So what are you waiting for sign up now, you won't regret it!

I am a big fan of F45 in general but the Northborough location really takes it up a notch. They…read morehave clearly worked hard to cultivate an energizing environment that''s also super accommodating of all fitness levels. The coaches are all motivating, hands on, and really push you to your maximum potential. Each class is challenging but it flies by with the ever changing movements and timing. Great energy and studio

F45 is as friendly and inspiring gym community that you can find!! It's clean they have taken the…read morenecessary precautions to provide a safe environment to stay healthy during these uncertain times. If you are looking for a place to stay or get into shape and feel like you are a part of a community then F45 Northborough is the place for you!

The very best strength and conditioning gym around. Nate is FANTASTIC. He incorporates a lot of…read moredifferent exercises in his full body workouts and no two workouts are the same. His energy is top notch and he is always paying attention to his clients in class. He wants us to get better, stronger. He doesn't hesitate to fix your form or comment on how to do an exercise better/wiser/more efficiently and it's extremely helpful and beneficial. I see results with him. He really cares about his clients and he is the BEST trainer I've ever had. Go check out warrior fitness. The prices are super reasonable and you are guaranteed a killer workout.

Nate Witowski puts his heart and soul into his training model and it shows. When a piece of real…read moreestate opened up, Nate grabbed this spot and is making a wonderful fitness center. I have trained with Nate, twice. He listens to your needs and creates a program. His group circuit training classes are great.

My son has been attending the build u After school program…read morefor kids since September. He absolutely loves the trainers. The kids there seem to be having a blast. Build u is trying to take an entire approach including teaching about good habits. We're very happy. PS Lauren the administrator does a great job keeping us informed on kiddo arrival and checks in if they miss a day.

I've been battling the 'I need to go to the gym' issue for several years now. Finally made the…read moredecision to try out the Build U facility and see what they had to offer. Mind you, I'm on week two of my fitness journey, but I will say that they have a very welcoming environment that has already pushed me to actually show up every day! From the layout, staff and other members who are in various stages of their fitness goals. Very encouraging environment and one that I have attended daily since joining. Kris and Nick are great trainers - personable, focused on ensuring that the circuit type training is lined up to your skill set all while doing so in an encouraging manner - not the 'in your face' type trainers that are out there. And I need to add - these guys really know their stuff. Amazing the difference in my core strength heading into my second week. Without question I would recommend Build U for anyone looking for an alternative to the standard gym setup, who is focused on seeing progress.

Solid gym. Always a good workout when I'm away from home. Usually clean and spacious and not too…read morecrowded.

This location is one of the best. When traveling I go to the local PF and very seldom find any…read moreother comparable. The Clifton Park location is clean spacious and usually in good condition. Very seldom machines are down for repairs for any length of time. I recommend this location.

I started training with Anthony in February a month after surgery. I had been a half as**d…read morepowerlifter for years but had to decrease weight while healing. Anthony designed a program that has helped me regain my strength and somehow managed to incorporate some HIIT (which I sorely needed) into it well. He is a world champion powerlifter, but he helps anyone meet their goals with professionalism, expertise and a lot of humor! I have also trained with Val, the co-owner, Connor and Ben. All have been professional, attentive and listen to what the client wants! Also highly notable is that my 80 y/o father with some cognitive decline has been working out here regularly for the last three months, personal training with Val. The difference in his gait, balance and strength is remarkable. He is much steadier on his feet, loves going to the gym and his three physicians strongly endorse his training. There is circuit training, coaching and open gym. Don't be intimidated by all the equipment you have never seen before. This is an amazing place, staff with even better coaches and truly is a judgement free zone.

Tried calling them a few times. But every time I spoke to someone they said I would get a call back…read morefrom Angel who is the owner. It's been over 2 month and I haven't heard from anyone. So much for their stellar five-star reviews. Psh! Update: The fact that the owner was so quick to call my review 'petty' when he didn't return my calls for months goes to show the line he's ready to walk just for the sake of maintaining a false reputation on yelp. It also speaks volumes of how mindful he is of other's time. We all come from a different place in our respective lives Mr Owner and all I expected was an acknowledgement. P.S: Don't assume people are stupid enough to tell the different between a genuine apology and a snarky comment. I hope have a fabulous day!

Boston Underground Strength Training is a godsend in the sports fitness community. I spoke with…read moreAngel on the phone to discuss my goals, recovering from a multi-year shoulder injury and getting back onto the path to powerlifting, and we set up an in-person consultation. The consultation was quick and thorough and we set up a plan of action to get me back in shape to lift heavy again. It took a while but trusting Angel and the other trainers here was the best thing I have ever done. I want to say it took about 8 months of recovery based training with the semi-private training group but I no longer have the chronic shoulder pain that I first walked in with. Since coming to Boston Underground Strength Training and going through the recovery training I have competed in three powerlifting meets and have been performing better than I could ever imagined thanks to the excellent programming and coaching provided here. Without Boston Underground I would never have been able to recover from my shoulder injury and probably would have had to give up on my favorite hobby. I wish I could rate this higher than 5/5. -Kyle Campofiore