Mount Sinai Medical Fitness

Redefine fitness trainers are exceptionally well dedicated individuals. Thank you for working with the self direction, community and being inclusive.

After recovering from an extended period of injuries, I realized that I needed to find a trainer with medical knowledge and an understanding of injuries. Using the trainer at this facility enabled me to move forward with confidence and gain physical strength. My trainer, Devon, was excellent, highly qualified, compassionate, and lovely to work with. All of the trainers at this facility are highly qualified. Thank you Devon and Redefine Fitness for giving me back my life and helping me to function at full capacity.

They say first impressions are the most important—well my first session at Redefine Fitness in Mt Sinai with Personal Trainer Dominick was a great one! Courteous, professional, thoughtful and insightful were my first impressions of Dominick. The facility is spotless, well maintained and stocked with an abundance of free drinks, snacks and a Nespresso machine! I met the owner, Anthony, the other day and he definitely sets the professional tone for his staff and facility. If you’re looking for personal training, Redefine Fitness can’t be beat!

I was hesitant to join another “gym”. Redefine is not another gym . It is a medical fitness program with an individualized workout plan to get you to your fitness goal whatever that may be complimented by nutritional support .Thank you to Kyle, Kari and Gigi for helping me reach my goals. I never thought I could get to where I am today . I highly recommend this program to be the best you you can be .

I have been going to Redefine since January and I can’t say enough good things! I have tried various personal trainers in the past and I have always had problems with them not listening to me as I have some medical concerns and very often would make things worse. The staff at Redefine really focus on you and working within reason to help you strengthen and progress. I have been working primarily with Gigi and she is fantastic but they have different trainers and it is easy to find a fit for what works for you. She knows when to push and adapts the training based on how I might be feeling. I have definitely gotten much stronger and feel a lot better since starting.

gigi is the best trainer ❤️ so kind, smart, and motivating

I've been going to Redefine in Stony Brook for about 2 months now and I love it. I actually look forward to working out. My primary reason for training is for healthy bones and strengthening my leg after an injury left me with a torn meniscus. I'm experiencing such positive changes already. I no longer notice weakness in my quad and I can do longer walks without my knee getting cranky. My trainer is Gigi and she's the BEST!!! She's very careful with me because of my bones and my injury while still challenging me every session. She keeps track and celebrates my progress each week and it feels so good to see and feel improvement in such a short period of time. Gigi keeps my workouts fun and interesting which is fabulous. AND ~ she's always researching new exercises for my particular needs! She's wonderful. The gym itself is very clean. The staff takes pride in their space. Everyone is so friendly and greets me by name when I arrive. I really enjoy Redefine!

I’ve been going to Redefine Fitness Stony Brook for 1.5 years and I keep coming back because the trainers are amazing. I feel so supported, encouraged, and strong every time I go. I’ve been working with Gigi for the past year and she always brings thoughtful, creative, appropriately challenging, and strength- and stability- building exercises to our sessions. I leave each session in a better mood, it makes my day.

coach gigi the best 10/10

The best gym, everyone is super supportive!

I loved training here with Meredith she is the best. She knew how to push me and make me feel super accomplished. Everyone should train with her!

I have been working with Meredith, my trainer, for over two years. My experience with Redefine and Meredith has been fantastic. I have not only been physically and mentally defined, but has made a forever friend in Meredith. She is extremely professional as well as easy to work with.

Training with Meredith at Redefine has been a game changer. She’s compassionate and knowledgeable, and makes training fun. I highly recommend her!

The absolute best! Victoria is my favorite.

Working with Kari has been great. She made my program personalized to me and ive seen so much improvement. The rest of the staff is always sweet when I come in and its so great to be a part of a place where everybody knows your name.

it’s been so great since my membership started here. I’ve hit my goals, learned my body, and learned how to workout properly. Highly recommend

I have loved working out here. I’ve seen so much progress and really love how welcoming everyone is. If you want to see your body goals come true, this is the place!

I highly recommend this gym. The trainers are amazing and i've seen so much progress with Kari. If you want community this is your place

Redefine has been life changing. Seeing so much progress and so happy to be in this environment. Will recommend to more of my friends!

I have been at redefine for a month working with Kari, she’s been so great with my sessions. Highly recommend as the staff has been so great as well! Seeing a lot of progress

I have been loving my experience with Redefine Fitness! The trainers have been so considerate of my needs and helping me get to my fitness goals. Especially considering my previous surgeries and how to progress without causing more pain to the healing process. I appreciate all the attention to detail this company has and the constant support from everyone on the team!

Very clean, upbeat atmosphere, fun, competent trainers. Meredith is knowledgeable, responsive and consistently positive and encouraging. .

I like to stay active and play sports, but gym is not my forte. I came to this gym after a particularly debilitating quad tear and I needed more than just a basic workout plan. Redefine’s “assessment “ team did really well and their plan is working well for me. It is also challenging and fun enough to keep me coming. Their app also records my exercises and I can reproduce my workouts on vacation or just during the week if I want to. I’ve had a great experience working with two trainers at this gym, each bringing something valuable to my recovery and overall fitness. I like this alternate rythm and I prefer it to the usual one trainer policy. Gigi was a key player in helping me stay beyond the initial enthusiasm. She added to the weight training a series of stretching, balance, and equilibrium exercises correcting muscle imbalances between my right and left side, helping me overcome the plateaus and build strength again.

I've been training at Redefine for a little over a year now and have been very happy with the experience and results. Mostly I've trained with Meredith and Devon, and occasionally also with Jin and Gigi. They've all been very knowledgeable and attentive to details, keeping in mind my past injuries when watching my form so I don't aggrevate anything, while still pushing me to improve. And they're very friendly and make the workout fly by.

It's coming up on 4 years that I have been a regular client at Redefine Fitness in Stony Brook. Working out is happily part of my weekly routine, not a program I have to drag myself to. I enjoy booking private sessions with Kolja. He keeps me on track and makes it fun. Highly recommend! The owner and personal trainers at Redefine Fitness are very knowledgeable. I enjoy working with several different trainers as they each have their own style. Having an appointment to work out keeps me accountable. I have belonged to other gyms in the past where I worked out on my own and sometimes I would skip the planned workout if I had a headache or was too tired or came up with some other lame excuse. Everyone is very welcoming and there are all ages of clients.

Tori is great at Redefine Fitness! She is an excellent coach who is always motivating and encourages me to do my best! She also gives me healthy snack options so I can stay on track with my fitness goals. Thank you, Tori!

Kolja has been a great trainer. He is super helpful!

Trainer dom great guy awesome experience!

Great facility with awesome staff. Alli is wonderful! You're not just told what to do - everyone is willing to explain things to make you feel comfortable with your program and confident to do it on your own as well.

Gi gi is great

Awesome place go try it you won’t be disappointed

Great place!

Love working out at Redefine Fitness! Meredith is the trainer that makes working out fun & motivates me to keep coming back! I’m adding to this post a year later because I still feel the same about Redefine Fitness and Meredith. I recently had a knee injury from playing pickleball and she modifies the workouts for me so that I don’t re-injure myself. I also like how clean the gym is. They are always wiping down the equipment. Thanks Redefine for keeping me healthy 💪🏻❤️

Awesome gym, it was a very clean and well maintained. Kolja is great!

Great gym, Kolja is awesome

I had been wanting to try out personal training for a long time, partly to get a momentum going again after a long time away from regular exercise, and partly to learn about weight training and how to build a proper workout, since most of what I'd focused on in the past had been cardio. But as someone in a bigger body, it felt nerve-wracking to find a fitness space that would be welcoming and respectful of my goals, and saw me as more than a potential "before" picture. I've been training at Redefine Fitness for 2 months now and the experience has been sooo awesome! From the beginning, staff were receptive to what I wanted to focus on and get from the experience, and in this short amount of time I have learned so much and am already feeling stronger and having less random body aches. As a really helpful added bonus, they're also flexible in their scheduling and membership pauses, which helps me work it into my crazy schedule. The trainers are all so chill and nice, it really is a great environment, and my trainer Gigi is sooooo wonderfull!!! Great person, attentive teacher, and awesome hype-lady 🙂 Thank you Gigi!!! <3

Fantastic and knowledgeable trainers! Gym is always pristine and up to date. I have enjoyed working with Devon and Kolja, who are able to modify my workouts to meet my exercise goals while accommodating for pre-existing injuries! Highly recommend!!

Kolja was very helpful, and personable.

Love working with Jin, he is great about knowing how hard to push so I continue to make progress without overdoing it. But I always feel like it was a great use of the time and I usually do a little more than I thought I could. Always a friendly vibe and it has done a ton for my back. Kari has been a great new addition and enjoy working out with her.

This place is the best. Kolja helped me with my pain. I really appreciate the help and advice he gave me.

Kolja and Kyle are both great trainers. They know how to rehabilitate my R shoulder after replacement

Gigi is a great trainer! I have been working with her for over a year and I am getting excellent results. I highly recommend her!

I've had a great experience at this gym and highly recommend it. I work mainly with Tori and Kyle, but all the trainers are knowledgeable, professional, and genuinely invested in helping clients reach their fitness goals. They take the time to create personalized workout plans, provide clear instruction, and offer encouragement every step of the way.

Kyle works with one of my participants, and does a wonderful job with them!

Kyle is awesome best in the business!

Great spot!! Make sure you ask for Dominick he was super helpful!!

Great experience! Tori was super helpful and made exercises less intimidating.

I have heard this is a great personal service!

Tori is an amazing trainer! She’s super motivating and helps you reach your goals

Best trainer! Thoughtful and developed an incredible fitness program. Highly recommend.