Done-with-you training at a done-for-you standard.

PREMIUM MEDICAL FITNESS

Private, one-on-one medical fitness in Stony Brook & Mount Sinai.

The expertise is ours.

The results are yours.

Our Programs

Private, one-on-one medical fitness, built around your body, your history, and your goals. Assessed, not guessed. Designed around you, not a template.

1-on-1 Training

Private personal training with a credentialed Fitness Specialist, never group, never shared. Every session built from your assessment and tracked in-app.

See training programs

RD-Led Nutrition

Nutrition led by a Registered Dietitian, individualized care built around your health history, labs, and training. From $90/week.

Explore nutrition

Elite Membership

Our most comprehensive experience, daily private sessions, concierge nutrition, unlimited sauna, DEXA benchmark, priority access. By invitation.

Explore Elite

Stretch & Recovery

Private 1-on-1 assisted stretch sessions to improve mobility, reduce tightness, and recover faster between training days.

See stretch sessions

The Medical-Fitness Standard

Assessed, Not Guessed

Redefine is a medical-fitness company, training grounded in evidence, built on assessment, and backed by credentials no commercial gym carries.

State-Backed

NY DOL Apprenticeship

The only gym with a New York State Department of Labor, approved apprenticeship, 2,000+ hours of training our Specialists complete.

Clinical Advisor

Amanda Teeple, NP

A board-certified Nurse Practitioner provides clinical input on our methodology, screening standards, and Specialist education.

Meet Amanda →

Nutrition

Registered Dietitian, Led

The highest nutrition credential there is, individualized medical nutrition therapy within her licensed scope.

Measured

InBody & DEXA

Movement screening, body-composition scans, and reassessments on a set cadence. Every session tracked in-app.

Proven

1,000+ Clients

Private, 1-on-1, never group, a thousand-plus people rebuilt in our two Long Island studios.

Amanda Teeple, NP and founder Anthony Amen at Redefine Fitness in Mount Sinai, NY

Not Sure Where To Start?

Answer 6 quick questions and we'll point you to the program built for your body, your history, and your goals, in about 60 seconds.

Find Your Program →

Commit to your program with 12 weeks paid upfront, and unlock an exclusive menu of perks:

PERKS:

Concierge Nutrition Program (uses 2 perks)

Nutrition Coaching

Daily Infrared Sauna

Weekly Stretch Sessions

Premium Spa Redemption at a partner location

 REAL PEOPLE. REAL RESULTS.


See why clients trust Redefine.


Lynn Pozmanter
1 month ago
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.
Response from the owner:Lynn, thank you so much for your kind words and for trusting Redefine with your training. We’re thrilled Gigi and our team have been attentive to your medical needs and helped you gain strength and feel better. We pride ourselves on matching members with the right trainers and adapting programs to how you’re feeling. We look forward to supporting your continued progress and are here anytime you need us. Thank You
Ky Herz
1 month ago
gigi is the best trainer ❤️ so kind, smart, and motivating
Response from the owner:Thank you so much, Ky! We're thrilled Gigi's kindness, smarts, and motivation have made such a positive difference for you. We'll be sure to pass along your lovely words to her. Thank You
Debra Charych
1 month ago
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!
Response from the owner:Thank you so much for this wonderful review, Debra. We’re thrilled to hear you’re experiencing such positive improvements with your knee and bone strength and that Gigi’s thoughtful, challenging approach has made workouts fun and effective. We’ll share your kind words with Gigi and the whole team. We look forward to supporting your continued progress. Thank You
Jen Signet
1 month ago
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.
Response from the owner:Jen, thank you for your wonderful review and for being with Redefine Fitness Stony Brook for the past 1.5 years. We're so glad Gigi’s thoughtful, creative, and appropriately challenging sessions leave you feeling supported, strong, and in a better mood. We’ll share your kind words with Gigi and the team. We appreciate your loyalty and look forward to continuing to support your fitness journey. Thank You
rona bogdan
1 month ago
coach gigi the best 10/10
Response from the owner:Thank you so much, Rona! We're thrilled to hear you think Coach Gigi is the best 10/10. We'll be sure to pass your kind words along to her. We look forward to seeing you again soon. Thank You
Sunny
1 month ago
The best gym, everyone is super supportive!
Response from the owner:Thank you so much, Sunny! We're thrilled to hear you feel supported. Our team and members work hard to create that positive environment, and we appreciate you being part of our gym. Thank You
Lauren Haag
1 month ago
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!
Response from the owner:Thank you so much for the wonderful review, Lauren! We’re thrilled Meredith helped you feel challenged and accomplished. I’ll be sure to pass your praise along to her and the rest of the team. We appreciate the recommendation and look forward to training with you again. Thank You
Jo Fitz
1 month ago
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.
Response from the owner:Jo, thank you so much for this wonderful review and for trusting Redefine and Meredith for over two years. We’re thrilled Meredith has helped you grow physically and mentally and that you’ve made a lasting friend in her. Meredith takes pride in being professional and easy to work with, and we’ll be sure to share your kind words. We look forward to continuing to support your journey. Thank You
Maradeth has been the lead trainer for Xavier for several years. He also work with other trainers (Gin, Devin, Amanda, GG, Kyle)which are all fantastic , hard working , dedicated, caring, knowledgeable . Way to go Team Maradeth . Thank you !
Response from the owner:Thank you so much for your kind words and for recognizing Maradeth and the rest of our training team. We're thrilled Xavier has been in such dedicated, caring, and knowledgeable hands. I will be sure to pass your praise along to Maradeth, Gin, Devin, Amanda, GG, and Kyle. We appreciate your support and trust. Thank You
Cathrine Duffy
1 month ago
Training with Meredith at Redefine has been a game changer. She’s compassionate and knowledgeable, and makes training fun. I highly recommend her!
Response from the owner:Thank you so much for the kind words, Cathrine. We’re thrilled Meredith’s compassionate, knowledgeable, and fun approach made training a game changer for you, and we will pass your praise along. Your recommendation means a lot to our team and to Meredith, and we look forward to supporting your continued progress. Thank You
Lindsay Iaboni
1 month ago
The absolute best! Victoria is my favorite.
Response from the owner:Thank you so much, Lindsay! We're thrilled Victoria is your favorite and she'll be delighted to hear this. We appreciate your kind words and look forward to seeing you again soon. Thank You
Cooper Johnson
2 months ago
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.
Response from the owner:Cooper, thank you for the wonderful review. We're thrilled Kari's personalized program has helped you see such improvement and that our team makes you feel welcome. We’re honored to have you as part of our community and look forward to supporting your continued progress. Thank You
Raymond Boyce
2 months ago
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
Response from the owner:Thanks so much for the great review, Raymond — we’re thrilled to hear your membership helped you hit your goals and learn how to train effectively. It’s awesome that you’ve gained confidence in your body and workouts. We appreciate the recommendation and look forward to supporting your next milestones. Thank You
Cassandra C
2 months ago
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!
Response from the owner:Thank you so much for your kind words, Cassandra! We’re thrilled to hear you’ve seen such great progress and feel welcomed by our community. Your dedication inspires our team, and we’re honored to be part of your fitness journey. We look forward to supporting you as you reach your next goals. Thank You
Silas Shaw
2 months ago
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
Response from the owner:Silas, thank you so much for recommending us and for the kind words about our trainers. We're thrilled Kari has seen so much progress and that you feel at home in our community. Hearing that our training and atmosphere make a difference means everything to our team. We look forward to supporting your continued progress. Thank You
Sydney Murphy
2 months ago
Redefine has been life changing. Seeing so much progress and so happy to be in this environment. Will recommend to more of my friends!
Response from the owner:Thank you so much, Sydney — we’re thrilled Redefine has been life changing for you and that you’re seeing such great progress. We’re grateful you feel at home in our environment and for recommending us to your friends. Looking forward to continuing to support your journey. Thank You
Chloe Addis
2 months ago
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
Response from the owner:Thank you so much for the kind review, Chloe. We’re thrilled Kari and the team have been helpful and that you’re seeing progress. We appreciate your recommendation and look forward to continuing to support you. Thank You
Nancy Mulholland
2 months ago
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!
Response from the owner:Nancy, thank you so much for the wonderful review! We're thrilled our trainers have been able to support your recovery and help you safely progress toward your fitness goals. Your recognition of our team's attention to detail and ongoing support means a lot, and we look forward to continuing this journey with you. Thank You
Donna Friedman
2 months ago
Very clean, upbeat atmosphere, fun, competent trainers. Meredith is knowledgeable, responsive and consistently positive and encouraging. .
Response from the owner:Thank you so much for your kind review, Donna. We're thrilled you enjoy our clean, upbeat atmosphere and find our trainers fun and competent, and Meredith will be delighted to hear you appreciate her knowledge, responsiveness, and positive encouragement. We look forward to supporting your continued progress. Thank You
Andree N.
2 months ago
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.
Response from the owner:Thank you for sharing your experience and for trusting us with your recovery after your quad tear. We’re thrilled the assessment team’s plan and our app have been helpful, and that the two-trainer approach—especially Gigi’s stretching, balance, and corrective work—has made a real difference. It’s great to hear the program is challenging, fun, and sustainable for you. We’re here to support your continued progress and keep you moving toward your goals. Thank You
Josh-Ph Lapan
2 months ago
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.
Response from the owner:Josh, thank you for the wonderful review and for training with us for over a year. We’re thrilled Meredith, Devon, Jin, and Gigi have been supportive, attentive to your past injuries, and helped you keep making progress. Hearing that the coaches make workouts fly by and that you’re happy with your results means a lot to our team. We look forward to continuing to support your fitness goals. Thank You
Pamela Avella
2 months ago
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.
Photo from customer review
Response from the owner:Thank you for your kind words, Pamela! We're glad to hear that our owner and personal trainers at Redefine Fitness have been able to provide you with a knowledgeable and enjoyable workout experience. It's great that you appreciate the variety of training styles among our trainers and find it helpful in staying accountable. We're also happy to hear that you've found our gym welcoming and clean, and that you've learned a lot during your time with us. We strive to keep our workouts interesting and engaging, and our small classes are a great way to achieve that. Thank you for choosing Redefine Fitness and for being a valued member of our fitness community! 💪🌟
Jessica Andradez
2 months ago
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!
Response from the owner:Thank you, Jessica! We're so glad Tori's motivation and healthy snack tips are helping you reach your goals. We'll be sure to pass your kind words along to her; she will be thrilled to hear them. Thank You
Nina Rack
2 months ago
Kolja has been a great trainer. He is super helpful!
Response from the owner:Thank you so much for the kind review, Nina. We're thrilled Kolja has been a great trainer and super helpful, and we'll be sure to pass your praise along. We look forward to supporting you with future sessions. Thank You
Gabby Sirico
2 months ago
Trainer dom great guy awesome experience!
Response from the owner:Thanks so much, Gabby! We're thrilled you had an awesome experience with Dom. We'll pass your kind words along to him. We look forward to training with you again and appreciate your support. Thank You
bouillai
2 months ago
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.
Response from the owner:Thank you for the wonderful review! We're thrilled Alli and the team made you feel supported and confident with your program. We pride ourselves on taking the time to explain things so members can feel comfortable and independent. We appreciate you choosing our facility and look forward to supporting your progress. Thank You
Noah Weisman
2 months ago
Gi gi is great
Response from the owner:Thank you so much, Noah! We're thrilled to hear Gi Gi provided great service. We’ll pass your kind words along and hope to see you again soon. Thank You
gina cohan
2 months ago
Awesome place go try it you won’t be disappointed
Response from the owner:Thanks so much for the kind words, Gina! We’re thrilled you enjoyed your visit and appreciate the recommendation. We look forward to welcoming you back soon. Thank You
Great place!
Response from the owner:Thank you so much for the great review, Margaret! We're delighted you enjoyed your visit and appreciate your support. We look forward to welcoming you back soon. Thank You
Donna Albergo
2 months ago
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 💪🏻❤️
Response from the owner:Thank you for your wonderful review, Donna! We're thrilled to hear that you love working out with us and that Meredith is making your experience enjoyable. Your motivation means a lot to us! Keep up the great work! Thank You
Dean Halbohn
2 months ago
Awesome gym, it was a very clean and well maintained. Kolja is great!
Response from the owner:Thanks so much for the great review, Dean! We're glad you enjoyed the cleanliness and upkeep of the gym. Kolja will be thrilled to hear your kind words. We look forward to seeing you again soon. Thank You
Ashley Guglielmo
2 months ago
Great gym, Kolja is awesome
Response from the owner:Thanks so much for the kind words, Ashley! We're thrilled you enjoy the gym and that Kolja made such a great impression—he’ll be happy to hear this. We look forward to seeing you at your next workout. Thank You
Jimena P
2 months ago
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
Response from the owner:Thank you so much for sharing your experience, Jimena. We’re thrilled to hear our team provided the welcoming, respectful environment you were looking for and that Gigi has been such an attentive teacher and awesome hype-lady. It’s fantastic you’re feeling stronger and experiencing fewer body aches, and that our flexible scheduling and membership pauses have made training fit your life. We appreciate your trust in Redefine Fitness and look forward to supporting you as you continue building momentum. Thank You
Elizabeth D
2 months ago
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!!
Response from the owner:Thank you so much for the wonderful review, Elizabeth! We’re thrilled to hear Devon and Kolja have provided knowledgeable, personalized training and that the gym’s cleanliness and equipment meet your expectations. It’s great to know we can accommodate your goals while working around pre-existing injuries. We appreciate the recommendation and look forward to continuing to support your fitness journey. Thank You
Paul Thielmann
2 months ago
Kolja was very helpful, and personable.
Response from the owner:Thank you, Paul! We're so glad Kolja was helpful and personable. We'll be sure to pass your kind words along to him. We appreciate you taking the time to leave this review and look forward to serving you again. Thank You
Jon Schneider
2 months ago
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.
Response from the owner:Thanks so much for the kind words, Jon. We're thrilled Jin is hitting the right balance to keep you making progress and glad your back has seen such improvement. Kari is excited to be part of your workouts and appreciates hearing that you enjoy training with her. We value your trust and look forward to helping you reach even more goals. Thank You
Tom Thielmann
2 months ago
This place is the best. Kolja helped me with my pain. I really appreciate the help and advice he gave me.
Response from the owner:Thank you, Tom — we’re thrilled Kolja could help with your pain and that his advice made a difference. We appreciate you taking the time to share your experience. Please let us know if we can support your continued progress. Thank You
Andrea
2 months ago
Kolja and Kyle are both great trainers. They know how to rehabilitate my R shoulder after replacement
Response from the owner:Thank you, Andrea — we’re so glad Kolja and Kyle could help with your right shoulder after replacement. We appreciate you trusting us with your rehabilitation and are proud of your progress. If you need any further support, we’re here to help. Thank You
Don Hurley
2 months ago
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!
Response from the owner:Thank you, Don — we really appreciate your 5-star review and recommendation. We're thrilled Gigi has helped you achieve excellent results over the past year. We'll be sure to pass your kind words along to her and look forward to supporting your continued progress. Thank You
Joann Mills
2 months ago
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.
Response from the owner:Thank you for sharing your wonderful experience, Joann! We're thrilled to hear that Austin and Tori have been able to support you on your fitness journey. Your commitment and progress inspire us! We're excited to help you achieve even more goals in 2025. Thank You
Rachel Frisella
2 months ago
Kyle works with one of my participants, and does a wonderful job with them!
Response from the owner:Thank you, Rachel — we’re so glad to hear Kyle is doing a wonderful job with your participant. I’ll be sure to pass your kind words along to him. We appreciate your trust and look forward to continuing to support you and your participant. Thank You
Tom King
2 months ago
Kyle is awesome best in the business!
Response from the owner:Thanks for the great review, Tom! We're thrilled Kyle exceeded your expectations and appreciate you calling him the best in the business. We'll share your praise with him. We look forward to serving you again. Thank You
Joe Daleo
2 months ago
Great spot!! Make sure you ask for Dominick he was super helpful!!
Response from the owner:Thanks so much for the 5-star review, Joe! We're thrilled Dominick was so helpful and appreciate you recommending him. We look forward to welcoming you back soon. Thank You
Martin Florimon
2 months ago
Great experience! Tori was super helpful and made exercises less intimidating.
Response from the owner:Thank you, Martin! We're so glad Tori made the exercises feel less intimidating. We'll pass along your kind words and look forward to helping you again soon. Thank You
Joyce Mathison
2 months ago
I have heard this is a great personal service!
Response from the owner:Thank you so much, Joyce — we’re thrilled to hear that! We take pride in providing personalized, attentive service and appreciate your kind words. It means a lot to know our reputation is reaching people, and we look forward to the chance to serve you or anyone you recommend. Thank You
Riley Blancett
2 months ago
Tori is an amazing trainer! She’s super motivating and helps you reach your goals
Response from the owner:Thanks so much for the fantastic review, Riley! We're thrilled to hear Tori's motivation and coaching are helping you reach your goals. We'll be sure to pass your kind words on to her. We look forward to supporting you in your next milestones. Thank You
Allison Acevedo
2 months ago
Best trainer! Thoughtful and developed an incredible fitness program. Highly recommend.
Response from the owner:Thank you, Allison — we’re thrilled to hear you had such a great experience! It means a lot that our trainer’s thoughtful programming made a real difference for you. We appreciate your recommendation and look forward to supporting your next fitness milestone. Thank You
Jonny D
2 months ago
Great experience and great results. Was hesitant at first but after reading some reviews it felt exactly like what I was looking for. Sessions are usually flexible, plenty of equipment that is always kept clean, and my old shoulder injury feels like brand new! The staff is welcoming and knowledgeable. My trainer Kolja is very experienced, genuinely encouraging and I noticed he kept coming up with different combinations to keep it fresh. So glad I joined the gym now with the injury behind and steadily making gains! Let's goo! 10/10 would recommend!
Response from the owner:Thanks so much for the awesome review, Jonny! We’re thrilled Kolja and the team helped you get your shoulder feeling brand new and that our equipment and flexibility worked for you. We appreciate the recommendation and are excited to keep supporting your progress. If you ever need anything or want new programming, just let us know. Thank You
Maureen O'Brien
2 months ago
Dominick is the best! We have the best time during our sessions.
Response from the owner:Thank you, Maureen — we’re so glad you enjoy your sessions with Dominick! Your kind words mean a lot and we’ll be sure to share them with him. We look forward to many more great sessions together. Thank You
Nancy Jantzen
2 months ago
Ask for Dominic! He was excellent!
Response from the owner:Thank you, Nancy! We’re thrilled Dominic provided excellent service and we’ll be sure to pass along your kind words. We look forward to welcoming you back soon. Thank You

Why Redefine Exists

Built By Someone Who Needed It First

A college injury left founder Anthony Amen with five herniated discs, a concussion, and chronic migraines. Twenty-five doctors had no answer. Fitness did. He rebuilt himself, and then built Redefine so the next person handed a discharge sheet and no plan doesn't have to do it alone.

That story is the whole reason we assess like medicine, coach like someone who won't give up on you, and track everything to prove you're getting your life back.

Download our App

Download our Redefine Fitness app to manage your schedule, book sessions, and more!

TWO PRIVATE STUDIOS.

SAME PREMIUM EXPERIENCE.

Stony Brook

Address

1113 North Country Road, Ste 4C, Stony Brook, NY 11790

Phone

(631) 364-9027

Hours

Monday: 5:00 AM - 8:00 PM Tuesday: 5:00 AM - 8:00 PM Wednesday: 5:00 AM - 8:00 PM Thursday: 5:00 AM - 8:00 PM Friday: 5:00 AM - 8:00 PM Saturday: 7:00 AM - 3:00 PM Sunday: 7:00 AM - 1:00 PM

Mount Sinai

Address

271 Route 25A, Ste 1, Mount Sinai, NY 11766

Phone

(631) 743-9906

Hours

Monday: 5:00 AM - 8:00 PM Tuesday: 5:00 AM - 8:00 PM Wednesday: 5:00 AM - 8:00 PM Thursday: 5:00 AM - 8:00 PM Friday: 5:00 AM - 8:00 PM Saturday: 7:00 AM - 3:00 PM Sunday: 7:00 AM - 1:00 PM

Book your appointment