Concrete Core Fitness

Washington, 40 Seaton Pl NW, Washington, DC 20001 | ★ 5 (27 Review)

📞 +1 301-404-9867

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Personal trainer Fitness center Weight loss service Women's personal trainer

About the Club

Founded in 2020, Concrete Core is a Washington, D.C.-based personal training and fitness center specializing in weight loss, bodybuilding, and virtual training. Established by Maxwell Onyenwe, a former Division-1 athlete and NASM-certified trainer, Concrete Core empowers individuals to achieve their fitness goals through personalized guidance and a supportive community.

Let's get you in the best shape of your life.

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Reviews

Nicole Llinares

★ 5

Max is a great person and a great trainer. He works hard to help you achieve your goals. I had never tried lifting before meeting Max and was very nervous to embark on this new journey. He made me feel comfortable immediately and the progress I have made over the past three months both physically and mentally is extraordinary. I am the strongest I have ever been and have developed a real love and passion for fitness. Would recommend training with Max to anyone.

Source: Google

Feras abdulkhalek

★ 5

I’ve been training with Max for almost 6 months now, twice weekly. I couldn’t be happier, my body has transformed into what i was looking for, he focuses on strength and mobility, and overall counterbalance of muscle strength. He listens to your body and integrates stretching. I’m really pleased and overall i feel better. Recommend highly.

Source: Google

Ali Jean-Pierre

★ 5

Max is an amazing trainer! His workouts are well crafted and he’s great about checking in and making sure you’re comfortable. Will definitely be booking with him again!!!

Source: Google

Sarah Christianson

★ 5

Max is great! He is smart and funny and really good at what he does. I highly recommend him!

Source: Google

Jessica B

★ 5

Max is a great personal trainer! In just one month, I’ve made gains increasing muscle mass and reducing body fat. I am someone who considers themselves very active but I mostly run and bike. Max is helping me build confidence lifting heavy and fixing my techniques!

Source: Google

Kentaro Murase

★ 5

The best workout. Max is great and thoughtful. I am in the best shape of my life.

Source: Google

Matt E

★ 5

Max is an exceptional personal trainer. He helped me achieve my goals quickly by introducing innovative exercises and boosting my strength. Thanks to his expertise, I lost weight and got in shape for my wedding. I'm now the fittest I've been since college. I couldn't have done it without Max's incredible support and guidance. Highly recommend!

Source: Google

Kate Voigt

★ 5

Max is a fantastic trainer!! I’m so thrilled I’ve gotten to work with him the past few months and would recommend him to anyone. I had fallen out of a regular workout routine during the pandemic, and started training with Max to get back in the swing of things. His training sessions always feel just tough enough, and super rewarding. I feel a lot stronger already, and am psyched to keep going. His passion for fitness is both evident and contagious!

Source: Google

Yoni Kalin

★ 5

My wife and I are very happy with the results. Max has amazing energy and I look forward to every workout 🏋️‍♀️. Seeing great progress and excited to continue to put in work!

Source: Google

Stefanie Harris

★ 5

Max is an excellent trainer! I was extremely nervous about working out with a personal trainer again, and was honest with him about how out of shape I was (it's been over 10 years since I was even in a gym). Max is always patient with me and explains all the exercises, the reasons he chose them for me, and what the goals are for each workout. He's passionate about fitness, and it really shows. He's extremely detailed-oriented and has a plan for every workout, but is also flexible and changes the workout as needed. He introduces yoga poses and stretches throughout the sessions, which I really appreciate. And he gathers data about my progress, which I love! It's very motivating to know the progress I've made in just a few months of working out with Max. I recommend Concrete Core to everyone!! #MuscleTribe

Source: Google

Emilie Galetovic

★ 5

"Max is an amazing personal trainer! His genuine passion for helping clients succeed really stands out. He goes the extra mile to keep me on track, offering helpful advice not just during our sessions but also for maintaining a healthy lifestyle outside the gym. Working with Max has truly made a difference for me, and I highly recommend him to anyone looking for a fantastic personal trainer. Thanks, Max, for your expertise, motivation, and constant support on this fitness journey!"

Source: Google

Lev G

★ 5

Max has been a great trainer. He pushes you while working with any injuries or issues you have, and helps you make visible progress.

Source: Google

Stavros Hilaris

★ 5

Max is an excellent private trainer. He is helping me recover from an injury, gain mobility and start getting in shape for real after only 5 weeks of training and two years of a sedentary lifestyle. Im looking forward to this journey. His skill in training comes from his knowledge of holistic body mechanics and applying the exercises that are the most effective for an individual’s goals.

Source: Google

Booked & Balanced

★ 5

Source: Google

Hoor Jangda

★ 5

Can't recommend Max enough!! I started training with Max about 7 months ago and my journey has been nothing short of epic. I would say I was a gym novice before this as someone who had barely worked out before. Workouts with Max helped me build confidence in myself and what I could do. He has an amazing, positive energy and deep knowledge of the body/muscles that he brings to all his workouts. He tailored each workout to my overall goals and where I was at that day. Truly the best part of my week. Through these workouts I have discovered a strength I didn't even know I had; just amazed at where these workouts have taken me. (and on the more superficial side, I look amazing).

Source: Google

Ogo Ugeh

★ 5

So I stumbled into Max when I was about to give up on my search for a personal trainer in the DMV.

He knows both the theory and practical aspects of fitness. He doesn’t just show you the how to but also explains the why. He doesn’t B.S.
He’s also very personable which makes the sessions more interesting.
He understands the assignment of being a motivator. I’m not the easiest client out there so I’m super glad I found someone who’s patient with me on my “off” days

Source: Google

Mary Zmuda

★ 5

I have been working out with Max at Concrete Core for almost a year now, and I cannot say enough good things! He knows his stuff, and takes the time to get to know you and your goals so that every workout is personalized to your exact needs. Max’s positive and fun personality, combined with a firm approach that doesn’t allow for slacking off, is the perfect motivation for seeing real results - I’ve made huge progress in my strength and weight goals. 5 stars all around!

Source: Google

Brian Dickerson

★ 5

I was not in shape at all when I started training with Max. In my mid 40’s, overweight and in I’ll health. My Concrete Core training regimen is specially crafted for my body. I’m seeing results after only one month! Max is not only encouraging and supportive but he makes the workouts fun and is very knowledgeable about the human body. I look forward to my workouts and now I wish I had started sooner!

Source: Google

Erum Kidwai

★ 5

Max is a great trainer! He’s really high energy and easy to get along with and reaaaallly cares about his clients. He puts in a lot of extra work to make sure our sessions are appropriate for me and works around a health issue I have to get the most out of our 1 on 1 training sessions!!! Couldn’t recommend enough :)

Source: Google

Will H

★ 5

I’ve been working with Max for only a short time but his knowledge and enthusiasm makes me look forward to each workout. I live close by and I use his basement “concrete gym” - it’s as no frills as you can get but it’s full of heavy things and gets the job done!

Source: Google

Michael Jones

★ 5

I am in my 30s. I have always been bad with flexibility and after some injuries, I had shoulder and back pain for many years. Issues sitting down for more than 5 minutes. Laying straight. Excuses. Life. Kids. Hard to work out consistent with my work schedule.

I was super satisfied with the professional and enthusiastic training I got for my weight and posture problem.

I always wanted to work on strength and mobility since I had issues with balance and metabolism. Felt like I couldn’t work out without being in pain or sitting. After a few workouts and following the tips when I’m not with my trainer, I am confident in myself to workout again solo. I know what I am able to do and not do yet. The pain free living is the key.

I haven’t had much back pain since I started workin out with Max last November. I was reminded of this programs importance the two weeks when I didn’t do stretches. After the holidays and 3 days of back in the stretches and strength building core workout, I was back to feeling pain free.

Down 10 pounds since Halloween.

Hop on the concrete core team and Max will make sure your a happy customer! Well done

Source: Google

David Reed

★ 5

I've been training alongside Max since "Concrete Core” was just an idea. This man really built his own professional plates from CONCRETE! lol if that's not motivating, I don't know what is!

Source: Google

Walsh Richards

★ 5

After the first session, I was hooked! I have done many personal training sessions with Max, he has a great energy and is very knowledgeable and friendly. When I first started training with him, I hadn’t worked out in years but he made me feel comfortable and confident every step of the way. Highly recommend!!

Source: Google

Jahleel Ford

★ 5

I have been training 4 times a week with Max for over a month, and there's no looking back - worth every penny! You want to transform your body?! This is the man to do it

Source: Google

Patrick O'Donnell

★ 5

Great experience, Max is an excellent trainer. After recovering from a lingering wrist sprain he worked with me on recovering lost strength while keeping my wrist in stable and safe positions. 10/10 would recommend.

Source: Google

John Foley

★ 5

Insane workouts!! As a Marine, we learn a thing or two about work ethic. This man really knows how to push your limits!

Source: Google

Mia Kajtaz

★ 5

Max is an awesome trainer! At first, I was nervous because I just wanted to tone up, not gain a ton of muscle.. but he was nice enough to explain my entire action plan, and now I'm 5lbs lighter in just two weeks! Loving the progress & I highly recommend :)

Source: Google