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March 2024 by Kevin V.
The atmosphere is really nice and if you ever need help the workers will always help you. The place is also really clean, overall a great workout!!
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December 2023 by Chris Carlucci
Great gym for the new and experienced. Opened almost 24 hours a day so it’s easy to find time to work out. Staff is also very kind.
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November 2023 by Justin Sargeant
I have trained at many gyms over the last 17 years. Underground is by far the cleanest and most organized gym, also "most complete" in the Fairfield county area. I highly recommend anyone looking for a gym to come here and take a look. Happy member. ?
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November 2023 by Kate B.
My daughter has been trying to cancel her membership for over a year. Every time she calls gym the manager, whom she has been told is the only person who can help her, is never available and has not returned any of her calls. We've told them to stop charging the credit card, however they continued to charge us anyways. The billing stopped finally for a brief period but we recently noticed we were being charged again. It may be a great place to work out, but their billing practices are a mess.
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October 2023 by Ruth Buissereth
Going since high-school and even brought my fiance along too! Love the yoga classes and the staff is super professional. Jonathan always greets us with a smile & remembered our names.
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October 2023 by Nicole Piontkowski
I recently moved here from out of state and have been looking for a gym that fits my needs. Underground is an amazing space to lift and everyone there is super friendly. The price point is great for what you get!
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October 2023 by Alex Genova
I have lifted in many different gyms throughout my life and this is by far my favorite. The trainers and staff are very friendly and everything is clean. It is a very nice environment to work out in and there are plenty of machines and weights for all levels of lifting.
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October 2023 by Domenic Demasi
I’ve been coming here for 5 years now and it hasn’t let me down once. The gym is kept clean and staff is always welcoming. No complaints.
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October 2023 by Fred C
There's a lot of good people here, staff, trainers and members. There is a large variety of strength training and cardio fitness machines and free weights. The workout areas and locker rooms are kept clean.
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October 2023 by Christopher Giglio
underground fitness has great facility with clean and nice variety of machines. there is a lot to choose from and is affordable and great environment to workout and reach your fitness goals
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October 2023 by Tyler Strub
Great gym, friendly staff. Always clean and good people. I would recommend to any avid lifter or just somebody trying to get in shape.
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October 2023 by Fred Black
Coming to this gym has been the best decision I have made and I highly recommend coming here rather than the other local gyms. The staff is awesome and makes you feel like your at home, it’s always clean, and of the hours are the best part!
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October 2023 by Veronica A.
This place is legit! Have been going here for the past two years. Staff is super nice and attentive. Tanning is free for members. Large locker rooms with clean bathrooms and showers. They will routinely take suggestions for new equipment, with the addition of the glute machine recently. Ample parking, which is so rare in Stamford. Great location.
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August 2023 by J J.
Male staff member who worked the night of 8/25 was very rude an disrespectful. The gym hours are also not clear. Thought it was 24/7 as posted on many spots in the gym and online but turns out it isn't. Very small and had the male staff member staring over my shoulder for the last 10 minutes of my workout waiting to kick me out.
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July 2023 by Tseten Sherpa
Amazing gym with a great environment and the best staff. Robynn and Bianca always greeting with smiles. Locker rooms are always clean and that’s something to look for at a gym. 10/10