Great atmosphere, the staff is very pleasant and professional. You will find all the equipment needed for your workout and then some. Very clean and friendly environment. Also convenient location. Please check out their extra curriculum classes, they are designed to meet different goals. Everyone who comes to O2 is serious about their purpose.. and did I say encouraging? All trainers are great here, but MO is the man💪 Thanks for pushing me beyond my comfort zone.

Absolutely love this place. Equipment/space is clean, Equipment is top of the line- tecno gym/ rogue etc. The front desk is always so welcoming and the price is affordable. I actually train my clients out of this gym and the environment is super welcoming vs. competitive which i've dealt with in the past. All the trainers create an enjoyable space for other trainers and their clients. Whether you are a personal trainer looking for a space to train your clients or someone who is looking for a welcoming/inclusive space to work out in on your own o2 is your space.

Healing hamstring micro tear so I can hike to Mt. Everest base camp in 2 weeks. Thanks to everyone at O2 Fit Nation for training me to be strong and healthy! Let the adventure begin! Dream big!

This is a beautiful new gym. The equipment is brand new and state of the art. The interior of the facility is very spacious and nicely laid out. Everything is new - including the changing rooms, bathrooms and lockers. Not to mention, the trainers are some of the best in their field, if you are looking for personal training.

Great gym. Clean facility, state of the art equipment, fantastic trainers, top tier customer service . Everything you could want in a gym!

Great facility with brand new modern equipment. This facility offers everything one needs, membership, classes and personal training. Great atmosphere and the best trainers on the upper east side. Most importantly very clean and up to date with all guidelines. Definitely my favorite place to workout and train my people.

I go here for the Monday evening classes. The teacher was late for one of the classes. So, they refunded us for that class and gave us a free class. I would totally recommend a great place for HIIT classes.

DEFINITELY exceeded my expectations. The HIIT class here through ClassPass kicked my butt and I loved the instructor Kojo. I gotta admit it was probably the same if not better than a Fhitting Room class (the same structure). Hidden gem on the UES. Beautiful facilities and the fanciest TechnoGym machines.

Kojo was a phenomenal instructor, motivated you just enough but wasn’t annoying about it. His workout definitely kicked my butt. The facility is super nice. If I lived in the city I’d consider getting one of their many deals for a membership.

O2 fitness has such a great vibe. It's super clean and the classes they offer are so intense. Some of the hardest workouts I've done. I take their classes through class pass and the intensity of the workout vs. the cost of the credits is by far the best value for what class pass offers. Jame's morning class is so, so great!

My new favorite gym in the UES! The place is beautiful, the equipment is top-notch, they have a back room for weights and squats and a separate room for various classes! Their fitness classes are my favorite and they have the best trainers! My fav is James Brewer- he is fantastic. I highly recommend this gym.

Great facility. State of the art equipment the whole space is very clean, private showers and spacious lockers. The staff is extremely friendly and I’ve loved all the fitness group classes I’ve taken so far. Would highly recommend to work out and to get a cryo therapy session.

I left Crunch for this gym and I’m so glad I did. Great equipment, clean, great staff. I’ve been a gym person all my life and as such, pretty picky, so please believe me when I say it’s a great place to workout.

Best gym. Roomy and not overcrowded, unlike corporate gyms. You can bring your own trainer, which was the original reason I joined. Staff is personable and helpful and other members and trainers are super considerate.

This boutique gym is a gem. The equipment is top of the line and maintained in perfect condition. The owners and all employees make it friendly, inviting and keep it sparking clean, there are extremely challenging clearest and a number of excellent trainers available. I highly recommend it

Kojo is the best! I've been going to his class for a few months now and each one is different. He comes up with a new routine every week so you never get used to the same exercises. He's super encouraging and awesome to work with. I really look forward to his class every week and always find it to be a new challenge! Highly recommend for anyone looking for a great new, HIIT/strength training class.

Great environment! State of the art equipment, as a trainer I refuse to bring my clients anywhere else! Not to mention they have normatec!

I have been working out with Fernanda for almost a year and have been having the BEST time. She’s so caring and above all is so motivational. I have seen so much progress and have been feeling so good. I would 100% recommend it to anyone :)

The best gym around, with state of the art equipment! Plus the best HIIT classes and multiple private shower areas/changing rooms. Def recommend

An exciting and wonderful place to work out. Much new equipment, clean and friendly atmosphere. My trainer also likes this facility. Great staff and owners. My highest recommendation.

I stopped by this gym because it’s right by my school, upon entering I was greeted by the kindest employee named Tade. The gym itself was clean and peaceful. Will be returning!

I love this gym, the place is amazing