Hauppauge Personal Training

Online & In-Person

One-On-One Training   |    Partner Training   |   Group Training   |   Habit Coaching   |   Online Training  |   Hybrid Training



The Leading Provider Of Online & Studio Personal Training In Hauppauge, NY

Transform Your Mind – Body – Health

Meet Our Personal Training Team:

Hauppauge Personal Training Team

Our team at Transfitnation is here to guide you on the transformation of your mind, body and health. Our approach focuses on forming healthy eating and exercise habits by transforming your mind. Using a scientific approach to execise, we will help you move better by improving your posture. Through our method of stability and strength training, we will transform your body by building muscle and burning body fat without hitting a plateau.

Every personal training session will be unique, fun and challenging in different ways. As you progress, you will unlock the many health benefits as you begin to live a healthy, fulfilling life.

We offer one-on-one personal training, partner training and group training to a wide range of clients ranging from 12 years old to 86+ years old. Whether your goals is to lose weight, tone up, build muscle, get stronger, reduce joint pain, or improve your health, we’ve you covered!

Our personal trainers are uniquely specilaized in weight loss, nutrition coaching, human movement and corrective exercise. Start now with a free first personal training session and move one step closer towards reaching your goals! 


Proudly Serving The Hauppauge Community

We are located at the intersection of Smithtown Boulevard & Terry Road

20 Gilbert Ave. Suite 201 Smithtown, NY 11787

We serve clients in Hauppauge and the surrounding areas at our personal training studio.


hauppauge weight loss trainer
hauppauge personal training
78 reviews on
November 10, 2023
Mike has been amazing to train with and I’ve been pushed out of my comfort zone to do more than I ever thought I could do. Transfitnation has given me a sense of accomplishment and I feel so much better physically and mentally since starting. Highly recommend!!
Angela Redmond
Angela Redmond
November 9, 2023
I highly recommend Transfitnation to all looking for great workouts with knowledgeable trainers. I train with Mike and he is great at pushing us to do our best. His workouts are both challenging and rewarding!
Rob Walsh
Rob Walsh
October 28, 2023
Great place to workout. My partner and I wanted to get moving, lose some weight and feel better. Steve is always there to help, differs our routines so it's always a new challenge! Excellent team and group to workout with!
Thomas Novak
Thomas Novak
October 27, 2023
I highly recommend Transfitnation for anyone wanting to work on their fitness. The one-on-one attention in a private setting has been the perfect place to help me work on/reach/evolve my fitness goals. I've gone from sweating bullets doing 5 pushups inclined on stairs to doing 15-20 Bosu pushups as a warmup. My trainer Stephan is always well prepared and motivating during our sessions, as well has preparing at-home workouts for me to do on days he doesn't see me. I've also worked out with most of the other trainers on the team when scheduling necessitated, and all have been great and had access to Stephan's notes to keep everything as consistent as possible. The physical space is well equipped and kept immaculate. Again, highly recommend.
Julie Li
Julie Li
October 17, 2023
I started training at Transfitnation since the beginning of 2022. I had injuries with tendonitis and jogging in the past. I stopped running for years because of it. Their knowledge not only help me build up muscles I need to protect my joints, but also continue to grow stronger without more potential hurts or pain. Highly recommend their services if you want to grow stronger without injuries. Revised 10/17/23 Here is an update: I have transitioned from group class to private coaching with Stephan, tendonitis and pain is less and less of an issue. I am clearly stronger then last year. My muscle strength enabled me to take up wind surfing, Thai boxing and running, sports I’ve always wanted to do without worrying about injuries any more. This is one of the best investments I do for myself.
Mia Bravo-Reyes
Mia Bravo-Reyes
October 12, 2023
I have been training with Transfitnation for the last 3 years and it has been an amazing experience. All the trainers are knowledgeable in various fitness workouts and how the body works. They have tailored my workouts to my specific needs and goals. All the trainers genuinely care about their clients' well-being. If you are looking for a knowledgeable, motivating, and supportive personal trainers to guide you on your fitness journey, I wholeheartedly recommend Transfitnation. Their expertise and passion for fitness are unparalleled, making them the ideal choice for anyone seeking transformative results and healthier lifestyle.
Alyssa Ericksen
Alyssa Ericksen
October 11, 2023
So glad I started training here! Stephan is the best! He’s very encouraging and makes you feel like you can accomplish anything while you are training with him!
Jean François
Jean François
October 9, 2023
I have a really great experience about transfitnation I’m starting 294 pounds 6 months after I’m 250 pounds and bill a lot of muscle 💪🏽 all of trainer good but my trainer it’s the best Stephan best trainer ever if you wanna see quickly results pick transfitnation + Stephan 💪🏽💪🏽💪🏽💪🏽💪🏽💪🏽💪🏽



In-person training at our studio near St. James, New York. Online training is available from the comfort of home.

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Meet with your coach and receive a postural assessment, body composition scan, and eating/exercise plan.  


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Training Hours: 

7 days a week (by appointment)


20 Gilbert Ave. Suite 201

Smithtown, NY 11787 USA

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