28280 Old 41 Rd, Suite 8, Bonita Springs, Florida 34135
If every time you “start working out again” your knees, hips, low back, or shoulders complain, it’s not because you’re broken. It’s because the plan wasn’t built for your 40+ body. At Theorem, we build joint-safe strength plans so you can get stronger and move with confidence again – without trashing your joints.
Tailored to Your Body
Science-based plans from a detailed assessment. No cookie-cutter workouts. Everything is personalized to your joints, history, and goals.
Strong in 30 Minutes
Less can be more – short, joint-safe strength sessions that are easier on your joints but still change how you move and how your clothes fit.
Built for Longevity
A plan you can see yourself doing for years, not just another 6-week program. We train in realistic 12-week phases inside a multi-year plan.
Your knees ache. Your shoulder nags. Your hip hurts. Your low back is tight. And every new program just makes it worse.
You’re not lazy — you’ve just never been given a plan that fits your body.
I’m Dominick, and I work with women 40, 50, 60+ whose joints hurt every time they “start working out again.”
My job is simple: build joint-safe strength so you can walk, lift, climb stairs, and live your life without being scared of your own body.
At Theorem, every plan is:
✓ Built from a full Pain-to-Performance Assessment, not guesswork
✓ Designed around your history, surgeries, and sensitive joints
✓ Run in 30-minute strength sessions that respect your limits while still pushing you
For many of my clients, this is the first time they’ve had someone watching over their muscles and joints long-term, the way a good doctor or dentist watches over their health.
Strong, confident movement for adults 40+. That’s what we build here.
We hop on a quick call to hear your story, make sure we’re a fit, and explain how Theorem works. If it sounds right, we’ll book your in-person assessment.
In the Lab, we test how your joints move, where you’re guarded, and which positions are safe right now. You leave with a clear 12-Week Strength & Longevity Plan.
We execute your plan together in 30-minute, joint-safe strength sessions (1-on-1 and/or IsoStrong pods) plus simple 5–10 minute home work, with progress checked every 4 weeks.
This guide is all about helping you build strength, reduce aches and pains, and move better—without feeling beat up after every workout. It’s especially designed for adults 40+ who want smart, sustainable fitness.
👉 Click below to download your guide
I have been training with Dominick at Theorem Fitness for several months and during this time I have seen marked improvement in my physical health and strength. My main goals are to get ahead of my Rheumatoid Arthritis and build muscle and strength. The anticipated result being less pain and increased flexibility. I have already experienced improvement. In the past, I have tried various other trainers and physical therapists to no avail. With Dominick, I can see muscle growth and I feel stronger. Dominick is very knowledgeable and has been able to help me significantly strengthen my weak areas. He keeps the training engaging and provides the necessary accountability I need to maintain my motivation in the program. He has made himself available for advice at any time. I have not seen this in any other program. He addresses all aspects of training, including diet. He has provided dietary suggestions and adapts a training program unique to my own personal needs and abilities. I, 100%, NO QESTION, recommend Dominick, especially if you do not think you are able due to a medical issue or injury. It is evident that Dominick truly cares about his clients’ success.
In just 12 weeks of working one on one with Dominick at Theorem Fitness, I reached all my goals! I have greatly improved mobility & flexibility, I am pain completely free and I lost 25 pounds and many, many inches! I had tried half a year of physiotherapy and was still in pain and still greatly limited in my flexibility & mobility. Dominick thoroughly tested my muscle contractions to truly understand what was happening and why. He then addressed my specific imbalances and set a program personalized for me. I have my life back and my physical future looks brighter than I could have ever imagined! 100% recommend!
I started training with Dominick back in July 2023 with some big goals and the desire to turn my whole life around, to become healthier and happier! I wanted to lose weight, strengthen and relieve lower back pains I’d had for many years. We managed to achieve all of it and more! He performed a lengthy and thorough in depth assessment of how my body moved and reacted (which I’d never had working with any another trainer), he then built a program personalized to me with all his findings. It worked!!! I lost 25lbs, I’m much stronger, I’ve toned up and fell better than i ever have…and NO pain!! His approach is genius, and i would highly recommend him over and over, and do! Don’t suffer, pick up the phone and book an appointment, you will 100% not regret it!
