Meet Debbie & Donna
Two instructors with decades of hands-on experience guiding learners every step of the way.
Meet Debbie and Donna
The Twinfinity Fitness Legacy - 92 Years in the Making
They say age is just a number. For us, it’s a testament.
If you’ve ever wondered if it’s possible to feel strong, vibrant, and full of life in your 60s and beyond—to not just add years to your life, but life to your years—you’ve come to the right place.
Welcome to Twinfinity Fitness. We are Debbie and Donna Lim, and this is our story.
A Lifetime of Movement, Forged Together
Our journey didn’t start in a gym; it started in a playground. As identical twins, we had a built-in best friend and a lifelong partner in every adventure. From climbing trees to running races, we discovered a simple, profound truth: moving our bodies was pure joy.
That joy became a passion, and that passion became our life’s work.
With a combined 92 years of experience in the fitness world, we haven’t just studied fitness; we have lived it. We’ve seen fads come and go—from the aerobics craze to the HIIT revolution. Through it all, we’ve held fast to one core belief: True fitness is not about punishment; it’s about empowerment. It’s about building a body that allows you to live the life you love, without pain, fear, or limitation.
The Secret Isn't a Secret. It's a Method.
People often tell us, "You can't be 64. You look 15 years younger!"
While we take it as a wonderful compliment, we want to be very clear: Our vitality isn’t a lucky genetic fluke. It is the direct result of a lifetime of consistent, intelligent, and joyful movement.
We haven’t just been teaching fitness for decades; we’ve been practicing what we preach, every single day. We know which exercises build resilient bones, which movements preserve precious joint cartilage, and how to cultivate balance that prevents falls. We’ve learned not just from textbooks, but from the most valuable laboratory of all: our own lives.
We’ve felt the subtle shifts that come with age, and we’ve mastered the art of adapting, strengthening, and thriving through every one of them.
Our Greatest Passion? It’s You.
We could have retired. But how could we hang up our hats when our greatest passion has always been teaching?
The lightbulb moment when a client realizes they can move without pain... The triumphant smile when someone stands on one foot without holding on for the first time in years... The newfound confidence that comes from feeling strong and capable... This is what fuels our souls.
We created Twinfinity Fitness not as a business, but as a legacy. It is the culmination of everything we’ve learned over our 92 combined years. It’s a safe harbor for those who have been told to "just take it easy," when what they really need is to be shown how to get stronger.
We specialize in the very challenges you’re facing—arthritis, osteoporosis, balance issues, post-surgical recovery—because we understand them intimately. We know the fear, the frustration, and the deep desire to maintain or reclaim your independence.
Your Next Chapter Starts Here
You have a choice. You can accept the narrative of decline, or you can write a new one.
We are living proof that the second option is not only possible—it’s waiting for you.
We are here to be your guides, your cheerleaders, and your living proof. We will give you the map, walk the path with you, and celebrate every single step you take.
Your journey to a stronger, more confident, and vibrant you begins now.
With love and strength,
Debbie & Donna Lim
Ready to Write Your Comeback Story?
[Join the Twinfinity Fitness Community on Skool]


Age is inevitable, decline is optional.








Trusted Experts
Debbie and Donna bring decades of teaching experience.
Their guidance made complex topics easy to understand and enjoyable.
Mark L.
Austin TX
Donna’s patient approach and Debbie’s clear explanations boosted my confidence tremendously.
Lisa M.
Denver CO