A comfort zone is the most dangerous area anyone can stay in.

I began training with Dennys in April for my September wedding. My hope was to lose a few inches and pounds before the big day and I am happy to say my results have been above and beyond my expectations! I have lost several inches, and 14 lbs! Beyond that, I feel very toned and strong and my overall health and energy level has drastically improved. an end goal of my wedding in mind; but I honestly would like to now incorporate training into my life as a consistent practice. I feel strong, happy and confident.
— Margaret Cereol
In just five short months, he has not only helped me lose 27 pounds (and counting) but also he has helped me enjoy working out. His combination of encouragement, praise, and humor during our sessions has motivated me to push myself far beyond my perceived capabilities.
— Melissa Berkowitz
The word trainer does not describe Dennys fully enough. He is also a motivator and one of the kindest and giving people I know. In the almost 3 months I have trained with him, I have lost a pant size, started to tone and overall feel better about myself. I would and have highly recommended Dennys to friends and family and none have been disappointed. If you want real results, this is your guy.
— Eunice Ortiz
After working with Dennys the past couple of months, I’ve never felt stronger and have never been in better shape! His dedicated attention to making sure my form is correct has helped me while training with him as well as other classes I’ve taken. I can’t wait to continue training with him so I can be in the best shape possible! Thanks Dennys!
— Alyssa Benson
I struggled to get into a consistent fitness routine until I started taking classes with Dennys. His passion, energy and ability to connect with his clients creates for a lively atmosphere focused on hard work and personal development. The confidence Dennys has in me is contagious - he is constantly challenging me and motivating me to push myself further. Dennys prioritizes safety and takes the time to highlight proper form; he is attentive and knowledgeable, offering alternative movements for all fitness levels. I could not ask for a better inspiration and ally on my fitness journey.
— Stephanie DeVito
I have been training with Dennys for over two years now, both in group classes and 1:1 sessions - before and after having a baby. His focus on form, movement and overall progress each week is something that I truly value. When I told him that I was pregnant (very early on), he immediately helped me modify and always kept a close eye on me during class. He is someone that I trust as a trainer and friend, and I know he always has his clients safety and best interests at heart. He has played an even larger role in my postnatal fitness journey, helping me feel stronger than ever especially as a new mom. He has an infectious personality and passion for fitness that makes the time you spend with him a wonderful experience. As soon as you meet Dennys, it’s easy to see that he is much more than a trainer - he is a kind, funny, and genuine human who gives 100% in everything he does. In addition to having a blast while working out, I see results quickly and continue to learn and grow in my personal fitness journey with a great motivator by my side.
— Samantha Levinson
Dennys is an exceptional personal trainer and one that can truly adapt to the needs of his clients. From the time you walk in the door, he’s fully focused on you and helping you improve day by day. I came to Dennys after suffering a rare injury where my muscle tissue broke down and I lost a significant amount of strength in my arm. Not only was I physically weak but the mental hurdle of getting over an injury was arguably the bigger challenge. During my sessions with Dennys, he was incredibly focused on fixing the issue at hand, but also ensuring the rest of my body (including my mind) was getting stronger in the process. There were many times Dennys would push me to pick up a heavier weight or know when I was mentally being lazy or scared and would push me harder. Safety was always a top priority. My confidence in the gym but also in my personal life grew tenfold. I would HIGHLY recommend Dennys to anyone looking for a personal trainer. His professionalism coupled with his great personality makes every sweaty and grueling session so much fun and challenging.
— Erin Flynn
I started training with Dennys one-on-one 4 years ago, when I was pregnant with my first child, after taking group classes with him for many years. Dennys is incredibly knowledgeable about fitness in general, and pre and post-natal fitness in particular, and kept me motivated and working out safely through both of my pregnancies. Now in my postpartum fitness journey, Dennys pushes me outside my comfort zone at each session and incorporates functional movements designed to make me stronger and faster, so that I can keep up with my (very) energetic children. On a personal level, Dennys is incredibly kind, fun to talk to, and great at making me forget how hard I’m working. I can’t recommend him enough!
— Megan Daneshrad
I’ve known Dennys since 2017 and have been working with him one on one with him since 2021. Over the past few years he’s not only helped me become physically stronger but mentally stronger as well.

We began training one-on-one as I prepared for my first marathon and has been an essential throughout completing five more injury-free free.

For me, he is so much more than a trainer. He is incredibly support and is there for me whenever I need him.

I know I speak for many when I say he treats every client like family. He makes me feel safe, strong and capable. I’ve learned so much from him over the years and can’t wait to continue to see what we accomplish together!
— Stefani Baron
Anyone that gets the chance to train with Denny will see how amazing he is and how he truly wants the best for his clients! I have been training with Denny 1 on 1 for 5 years and before that in a group setting. All I can say is he is truly exceptional.

From our first session he has made me feel comfortable , addressed every concern I have had, and really listens to my goals. He knows the exact moments to push you and gets at the core of each movement so that you’re comfortable and confident.

He has taught me how to lift the heavy weights correctly and through my training with him I have even started to ask to for more weight or push farther, and that is because of Denny and the way he personalizes each session to each person. He truly is passionate not only about his work but about his clients what they need and helping them achieve it. He is the best trainer I have ever trained with and I would recommend him to anyone that asked!
— Kim Kalik
Dennys is amazing and a trainer I would highly recommend to anyone! I started with him when I was around ten weeks out from running the Chicago marathon, and was not running at all recovering from a hip injury. Not only did he safely get me to the start line - but I ran my personal best. The improved strength and mental / physical confidence he gave me were invaluable and amazing!
— Jordyn Rockower
My friend and I trained together with Dennys when we were living in New York City. There were some of the best workouts we’ve ever had. He pushed us to strengthen our entire body. It was a great mix of calisthenics cardio, and weight training. I’ve used several personal trainers in my life, and Dennys was at the top of the list.
— Seth Glasser
Dennys is hands down the best trainer I’ve ever worked with. It’s not just his expertise or his dedication to creating personalized training plans—it’s his unwavering commitment to helping you become the best version of yourself. I’ll forever be grateful for that. He knows exactly when to push you to the next level and when to be the support you need. Dennys believes in your potential, even before you do. He’s professional, committed, and holds you accountable. At the same time, he’s patient, empathetic, and fiercely competitive. I would recommend him to anyone, regardless of fitness level. There’s simply no one better in the business.
— Courtney Carnevale
I started training with Dennys in 2022 to include strength training into my race training. As my race training started to slow down in 2023, I decided to continue with strength training as I realized it had become a significant part of my life. In the last three years I have become stronger and more confident than ever. Even with a few setbacks, Dennys has never given up on me and always works to ensure I’m training in the best and safest way for myself. I’m grateful to have found such a great training coach!
— Maria Zachariadis Souris
Dennys is a prenominal trainer! Seriously. He continues to help me focus on my overall fitness and mobility goals and does so in an intuitive way that helps meet me wherever I am that week. Whether tired from a long week of work travel or recovering from an injury, Dennys is always able to adapt our workouts to get the most out of them while keeping me motivated and focused on my long-term results. He helps make small tweaks to my form and routine that are challenging but not overwhelming, so I don’t dread our work outs together and am always glad I showed up for the session.
— Denise Decuir
Working with Dennys as our personal trainer has been a transformative experience. His unwavering positivity and enthusiasm make each session enjoyable and motivating. Dennys has expertly guided my husband and I through weight, agility and cardio training tailoring workouts to our individual needs and goals. His deep knowledge and personalized approach have not only improved our physical fitness but also boosted our confidence. We highly recommend Dennys to anyone seeking a dedicated and inspiring personal trainer.
— Lauren and Adam Moss
Working with Dennys over the past few years has hugely improved and impacted my life mentally and physically. Aside from getting stronger and mastering new skills he has also taught me consistency is key.
I was an athlete growing up, but changed courses to the theatre world which took me out of the fitness community a little bit, so being able to come back into myself with sessions from him gives me the comfort and confidence knowing I’m still the athlete I was.

Each week I continue to grow which seems almost seamlessly as we go up in weight, hit new goals or try new skills that all reassure me I’m in the right place, with the right coach.

He holds me accountable in and out of sessions and I always look forward to next week. He is an incredible coach who dedicates his time to individualizing each session for each client.

I’m grateful for his commitment to my growth and development, for his patience he has while I train, and for his amazing personality that always puts a smile on my face every session.
— Jackie Collins
Dennys has been an exceptional trainer who truly listened to my goals following knee surgery and beyond. He crafted a personalized program that not only accelerated my recovery but also helped me regain strength and mobility faster than I had imagined. His blend of expertise, humor, and compassion made every session both motivating and enjoyable. I always left feeling accomplished and empowered. With a high level of professionalism and a deep understanding of fitness and rehabilitation, Dennys is a trainer I would enthusiastically recommend to anyone seeking meaningful and lasting results. Whatever it is, the way you tell your story online can make all the difference.
— Tina Reshmi
I’ve been training with Dennys for over 4 years individually and took group classes with him for several years before that. Put simply, Dennys knows what he’s doing. He creates a program that is full body, flows logically, and is well balanced. He corrects form and ensures you’re performing the movements safely. I’ve gotten stronger working out with Dennys and seen body composition changes without even adjusting my diet. He also knows how to scale up or scale down a workout depending on the individual’s needs and has frequently made on-the-fly changes to my program depending on how my body feels on a given day. He has modified my workouts and coached me through sports injuries, so that I am able to keep moving while I’m recovering. I’d highly recommend Dennys, whether you’re a gym newcomer or someone more experienced looking for more structure and accountability. His programming is worth it.
— Emily Finestone
I’ll start with saying Dennys is THE BEST. I’ve been training with him on/off for about 12 years. I tried other trainers before him and in between (because I switched gyms a few times) but, no one compares to Dennys. Honestly, when I work with Dennys I SEE results. My body transforms. I tell him what I want and he helps make it happen. He motivates me, pushes me out of my funks and makes me laugh (added bonus). Training with Dennys is good for your mind, body and soul! He often kills me and I wonder why I pay for the torture but seeing and feeling the results makes it all worth it. I’ll also end with saying Dennys is THE BEST.
— -Julia Bekker
I’ve known Dennys for over ten years, having trained with him in both group class settings and one-on-one sessions—and I can confidently say, he’s one of a kind. After having my first child, I knew I wanted to feel strong, energized, and confident again, and Dennys was the first person I turned to. Thanks to his thoughtful, personalized approach, I was able to feel like myself again—and even stronger than before.
He truly listened to my goals and created a full-body workout program focused on strength, agility, and endurance, all designed to help me become a strong, capable mom while also feeling fitter and healthier. I’ve done all kinds of workouts and trained with other trainers, sometimes working out 4–5 times a week—but I saw more noticeable results from just one session a week with Dennys than I did with any of those other programs.
What sets Dennys apart is his focus on proper form and technique. Every movement is intentional, safe, and effective, which leads to faster progress and fewer injuries. He’s incredibly knowledgeable, genuinely cares, and brings a level of energy and creativity that keeps every session fresh, fun, and challenging. I always looked forward to our weekly workouts!
I trust Dennys completely with my fitness journey and would recommend him to anyone—whether you’re starting fresh, coming back after a major life change, or just looking for someone who really knows how to help you level up.
— Carly Peterson Mendes