DARE TO BE GREAT
DARE TO BE GREAT
BUILD THE ENGINE THAT WILL POWER YOU FOR A LIFETIME
Unlock your full athletic potential, get strong where it matters most.
WE ARE PASSIONATE
ABOUT WHAT WE DO
At Tri90 Fitness, we believe that anyone, regardless of age or skill level, can enhance their health and wellness through three steps: stabilization, strength, and power. By focusing on these three steps, we guide our clients through a series of challenging (but attainable) movements all while ensuring proper form and muscle engagement. No matter their past, we are excited to help them build their future.
Did you know it takes 90 days for a habit to become a lifestyle change? Here at Tri90 Fitness, we are not satisfied with just making better habits, we are looking to help our clients reach total lifestyle changes. One that will stick with them for life.
With our 90-day program, we know we can help our clients reach their next level of fitness. We customize each plan to meet the individual needs of our clients. Let us work with you to find and maintain the changes you have been looking to make to your lifestyle.
This isn’t just training—it’s a transformation that lasts.
The Functional Fitness Advantage
No Rigid Training Methods
Unlike traditional fitness approaches, Tri90 prioritizes the way your body is designed to move, rather than forcing it into rigid training methods.
BUILD AN ENGINE
“Our motto for training is to build resilience, move with intention and purpose, and to build an engine that can power for a lifetime,” proclaims Owner and Trainer, Oscar Charles Jr.
Move the Way Your Body Was Meant To
Correct imbalances, prevent injuries, and train for longevity.
Build Strength That Actually Matters
Develop strength at the joint level and in real-world movement patterns.
Live Pain-Free, Move Powerfully, and Stay Active for Life
No more guessing. No more temporary fixes. This is lifelong fitness with a community that supports your journey.
The Tri90 System Functional Fitness for Life
Most fitness programs focus on aesthetics or short-term strength gains but fail to address the way your body is meant to move. At Tri90 Fitness, we believe in functional movement—helping you regain control, prevent injuries, and build lasting strength at the joint level. This isn’t about lifting heavier or just looking fit—it’s about moving better, feeling stronger, and living longer.
STABILIZATION
Move the Way Your Body Was Meant To
Before adding heavy weights or explosive movements, we reset and rebuild your foundation using:
Controlled Articular Rotations (CARS) – Improving joint mobility, resilience, and longevity by training each joint through its full range of motion.
Core Activation & Balance Work – Ensuring you control movement from the inside out, reducing injury risk.
Mobility & Corrective Drills – Fixing imbalances and movement inefficiencies before adding strength.
STRENGTH
Get Strong Where It Matters Most
Once mobility and control are in place, we build strength at the joint level using:
Progressive Resistance Training – Strengthening muscles, tendons, and ligaments to support safe, sustainable strength gains.
Functional Movement Patterns – Training real-world movements that improve athleticism and daily life.
Stability Under Load – Applying CARS-based mobility work to ensure joints stay strong and mobile under tension.
POWER
Unlock Your Full Athletic Potential
With mobility and strength established, we train for explosiveness, agility, and dynamic movement using:
Plyometrics & Speed Training – For athletes looking to gain explosive power and professionals looking to regain athleticism.
Dynamic Strength Work – Incorporating controlled rotational and multi-directional movements to mimic real-life demands.
Advanced Loaded CARS – Applying joint-specific strength work under load, reinforcing long-term joint health.
WE WANT YOUR COMMITMENT…
There is no better investment than one for your health. We are confident that in 90 days you will not only see physical changes in your body, but you will be more inspired to continue to care for your overall wellness, even outside of the gym. If you are determined to start making some better choices for yourself, to show up for yourself in ways you haven’t done before (or in a very long time), and determined to find a lasting lifestyle program, we are here for you.
MEET OWNER & TRAINER
OSCAR CHARLES JR.
Oscar Charles Jr. is the founder and head trainer at Tri90 Fitness, where he’s spent the past five years building more than just a gym. He’s built a powerful community rooted in transformation. At Tri90, the focus is clear: mobility, strength, and functional training designed to support real life. Whether you're chasing after your kids, lifting groceries with ease, or simply wanting to move better and feel stronger, Oscar meets you where you are and helps you build from there.
Through intentional coaching and personalized programming, Tri90 guides clients of all ages and abilities through a proven 90-day system that creates sustainable change, physically and mentally. With an emphasis on form, stability, and purposeful movement, clients not only build strength, but also resilience and confidence.
What started as a bold vision has become a trusted space for those who once felt “too old” or “not fit enough” to begin. Five years strong and still growing, Oscar and the Tri90 team are helping people commit to something bigger than a workout. They’re helping them commit to a healthier life.
Meet Your Tri90Fitness Trainers
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Oscar Charles
Kendall Wangman
Rob Hackett
Kate Nickel
DARE TO BE GREAT
BUILD THE ENGINE THAT WILL POWER YOU FOR A LIFETIME
July 2025: A year ago, I walked into Tri90 an obese smoker approaching my 65th birthday. It was a rough, slow start. I had poor posture, struggled with rudimentary exercises and had no cardiovascular endurance. I was also expecting an overnight "cure". With Oscar's patience and perseverance, one year later I have lost weight, quit smoking and developed some muscle tone and strength. I'm still working on the Cardio endurance and weight - but as Oscar says, "Trust the Process". I would highly recommend Oscar and Tri90 as a fitness destination regardless of your age or physical condition. Oscar adapted and customized a program for me. I have progressed from a single 30-minute session to a 45-minute private session and 2-3 group classes a week (something I originally said I wouldn't be able to do). Oscar also helped me develop a plan for working on my own at home, including providing the tools necessary. The other gym members are genuine and supportive. This is gym is built upon the premise of helping each other. I'm looking forward to the next year and the results I will achieve.
Deb Martens-White
Oscar at Tri90 Fitness was instrumental in my success during my Rookie Pro season, helping me earn Rookie Pro of the Year and National #3 Pro! He has the ability to identify weaknesses and tailor weekly sessions based on my provided information and input, which has made me a stronger and more well-rounded athlete. His expertise in fitness and training is evident, with exercises perfectly suited to any specific focus.
What sets Oscar apart is his passion and dedication. He frequently checks in between sessions to see how my training sessions and races are going, and he even attended one of my national events. While most of our sessions are virtual, he welcomed me to his gym when I was in town one weekend for an in-person session. This, along with needed schedule changes, show his incredible flexibility and commitment to making the sessions work no matter the circumstances. I can’t thank him enough for all of his help!
Drew Polk
I've had the privilege of knowing Oscar for a number of years and also a work with him as a client. I recently completed a hip resurfacing surgery and Oscar has been instrumental in getting me back on the basketball court better than ever! He's a tireless worker that gives as much attention, coaching, and energy at 5am as he does at 6pm. He's constantly looking for more education and learning, and developed a comprehensive plan for me that I can execute with him or on my own. That's the mark of a great trainer! He's always looking for new ways to grow the business, and his new injury prevention training will be a game changer. I wish I knew him 15 years ago... I would've never needed hip surgery. Thanks Oscar for everything you've done for me. I highly recommend Tri90 Fitness to anyone looking to improve their life!
Peter Weber
I can't say enough great things about Oscar at Tri90! Since I started working with him, my fitness journey has completely transformed. He is incredibly knowledgeable, motivating, and genuinely cares about your progress and well-being. Every workout is tailored to my goals and ability level, and he always pushes me just enough to get results without ever feeling overwhelmed.
What I appreciate most is his ability to individualize all programs, and make my fitness goal present even in group settings. Each session leaves me feeling stronger, more confident, and more motivated. Whether you're just starting out or looking to level up your fitness, I highly recommend Oscar! Truly one of the best!
Jen Franske
If I could give 10 stars, I would. I’ve been working with Oscar 1:1 the last 6 months and it has been an amazing experience. He truly takes the time to listen to your concerns and customizes each workout session to your bodies needs. I have an injured shoulder and Oscar has been customizing my workouts to help restore my shoulders strength & overall function. Each session I continue to get stronger and love the results I have been achieving! He’s extremely fun & encouraging during workouts, and I no longer dread going to the gym now that I’ve built a habit of putting the work in. Oscar also helps set you up for success at home with nutrition education and workout plans you can do at home in between sessions to maintain your results. Highly recommend Tri90 Fitness!!
Anna Waddington
My son started working out with Oscar to help build his overall endurance, speed, and strength in preparation for sports! The way Oscar works with these young athletes including my son is amazing. He pushes them, they confide in him, all while having this unmatched energy that keeps them engaged! I then decided to give it a try myself after loving his style, and personality and l have never worked out this long in my life!! Oscar believes in you, listens to you, has the best energy to get you through your workout. If you are wondering if this is for you or your family you will not regret it, or look back! All it takes is one session with Oscar.
Corrine Lempke
forever thankful for the day i walked thru the door at tri90 for a free flex & mobility class. i was coming off an injury & scared to get moving again. i couldn’t wait to start working 1:1 w/ oscar. he pushes me, listens to my concerns & helps me work thru them, & we have an absolute blast! my running is back on track, my form is improving daily, i’m stronger than i’ve ever been & as a fitness instructor myself, my approach to coaching others has improved! i look forward to my workouts every week & love noticing the gains i’ve made in the past few months.
Jenna
Working with Oscar at Tri90 on fitness and nutrition for the last 90 days has been life changing. It’s hard to find the perfect words to not only describe Oscar’s knowledge about fitness and nutrition but also describe his ability to connect with the person he is working with. Oscar was able to create a personalized program that was manageable and allowed me to achieve the goals I set. Oscar is patient and always available to answer questions and offer advice. I was able to incorporate my nutrition plan into my busy lifestyle. If you’re thinking about prioritizing fitness and nutrition in your life I couldn’t recommend Tri90 enough!
Michelle Finn
I've been a client at Tri90 for a year now. I have to say that this is by far the best gym/training experience I've ever had! Oscar does a great job of making sure that you're challenged in a workout, but not losing focus on the movement's form, and potentially hurting yourself. When I showed up, I had debilitating back pain, and was almost unable to put my own socks and shoes on. Working with him for about three months, my back pain was resolved. After continuing with Tri90 for a whole year, I'm down 25 pounds, and have gained functional mobility I honestly didn't think would follow me into my 40's. Oscar is humble, caring of his clients' wellbeing, and always keeps the focus of each session on the point that each workout is part of building a habit, which takes time. He's done an amazing job of fostering a community centered around Tri-90, and making sure every one of his clients feels empowered to be the best version of themselves possible. Thank you, Oscar and Tri90!
Rob
I’ve been training with Oscar at Tri90 for over two years, and I can honestly say it’s changed my life. When I started, I was a 40-year-old mom of two, uncomfortable in my body and searching for something sustainable. I had tried other gyms and classes before, but nothing ever stuck—until Tri90.
With Oscar’s guidance, I’ve lost 40 lbs. and gained so much more: strength, confidence, daily movement, better nutrition habits, and a mindset shift that’s become a lifestyle. His coaching is smart, intentional, and personal. Tri90 focuses on enhancing your life, not restricting it. Every workout is different – seriously I come 5 days a week and have never had the same workout twice! – and I truly look forward to it. Always a good time!
What makes Oscar different is his philosophy: he centers everything on giving back, building a solid foundation—no matter your starting point, and crafting personalized plans that actually work for you. It’s his signature and it’s something every single person who walks through the doors at Tri90 feels and experiences.
Oscar is the real deal and Tri90 isn’t just a gym—it’s a community. The energy, the support, the encouragement… it’s something truly special.
If you're ready for something different—something that lasts—I 100% recommend you give it a Tri. You won’t regret it!
Kate Nickel
WE WANT YOUR COMMITMENT…
There is no better investment than one for your health. We are confident that in 90 days you will not only see physical changes in your body, but you will be more inspired to continue to care for your overall wellness, even outside of the gym. If you are determined to start making some better choices for yourself, to show up for yourself in ways you haven’t done before (or in a very long time), and determined to find a lasting lifestyle program, we are here for you.