GLP-1 Strength Training for Muscle Retention: The Expert Online Personal Training Guide
If you are on a GLP-1 medication like Ozempic, Wegovy, or Mounjaro and losing weight fast, there is a critical question your doctor may not be asking: how much of that weight is fat — and how much is muscle?
Without targeted strength training, a significant portion of weight lost on GLP-1 medications comes from lean muscle mass — not fat. This leads to a condition called sarcopenic obesity: you weigh less, but your body fat percentage is higher, your metabolism is slower, and your long-term health is compromised.
I’m Terri Walsh, creator of Active Resistance Training® (A.R.T.) and an online personal trainer with over 40 years of experience. I specialize in GLP-1 strength training for muscle retention — live, private Zoom sessions designed to protect your lean mass, optimize your body composition, and ensure your weight loss is sustainable for life.
Why Muscle Retention Is the Most Critical Factor in Your GLP-1 Journey
GLP-1 medications are powerful tools for weight loss — but they are blind tools. They suppress appetite and create a significant caloric deficit without distinguishing between fat and muscle. Without structured resistance training, your body breaks down both for energy.
The consequences of muscle loss on GLP-1 therapy go far beyond aesthetics:
- Metabolic Rate Compromise — Muscle is the primary driver of your resting metabolic rate. Losing it slows your metabolism, making weight maintenance harder and increasing the risk of regaining weight after stopping medication.
- Functional Decline — Loss of strength directly impacts daily activities, mobility, and quality of life. It heightens the risk of falls and injuries, particularly as you age.
- Bone Health Deterioration — Muscle contractions stimulate bone density. Losing muscle accelerates bone mineral density loss, increasing fracture risk — especially critical for postmenopausal women.
- Suboptimal Body Composition — Even at a lower body weight, a high fat-to-muscle ratio results in a less toned appearance and adverse health markers. The scale goes down but the body looks and feels softer.
A dedicated focus on GLP-1 strength training for muscle retention is not optional — it is the difference between losing weight and transforming your body.
The Best Workout for GLP-1 Users: What the Science Says
A six-month clinical study of 200 adults on GLP-1 and dual GLP-1/GIP medications found that supervised strength training and adequate protein intake were the key factors in minimizing muscle loss while losing fat. Women in the study lost an average of nearly 24 pounds of fat while losing less than 1.5 pounds of muscle — when they had structured resistance training support.
The best workout for GLP-1 users prioritizes compound resistance movements that engage multiple muscle groups simultaneously. Squats, deadlifts, presses, and rows provide the mechanical load your muscles need to signal the body to preserve lean tissue during a caloric deficit. Two to three sessions per week of progressive resistance training, consistently maintained, is sufficient to dramatically reduce GLP-1-driven muscle loss.
Active Resistance Training® (A.R.T.): The Definitive GLP-1 Strength Training Method
At the core of my approach is the Active Resistance Training® Method — a revolutionary system specifically designed to build strength, sculpt muscle, and enhance body composition without heavy weights or high-impact movements. A.R.T. is the ideal GLP-1 strength training solution because of its unique attributes:
Low-Impact, High-Efficiency Muscle Stimulus
A.R.T. utilizes bodyweight and foam yoga blocks to create active resistance — delivering a profound muscle stimulus and metabolic response without stressing joints. This is crucial for maintaining consistency and preventing injury during rapid weight loss, when joints and connective tissue are more vulnerable.
Core-Focused, Three-Dimensional Movement
Engaging multiple muscle groups across all planes of motion, A.R.T. builds functional strength that translates directly to improved daily living, better balance, and a more balanced physique. Every movement is purposeful — no wasted effort, no unnecessary strain.
Accessible and Adaptable to Your Energy Levels
GLP-1 medications can cause fatigue, nausea, and low energy — especially around injection days. A.R.T. requires minimal equipment and can be performed anywhere via Zoom, and every session adapts to how you feel that day. Consistent, moderate training beats sporadic intense sessions every time for muscle retention.
Progressive Overload for Continuous Adaptation
Terri Walsh’s meticulous program design ensures progressive challenges suitable for all fitness levels — allowing for continuous muscle adaptation and growth throughout your GLP-1 journey, even as your body weight changes rapidly.
Why You Need a Specialized Online Personal Trainer for GLP-1 — Not a Generic App
Optimizing GLP-1 results and ensuring robust muscle retention is a complex endeavor. A specialized online personal trainer understands the physiological impacts of GLP-1 therapy and the precise exercise and nutritional strategies needed to complement it. This expertise is particularly vital for women, who face unique considerations related to hormonal shifts, bone density, and body composition.
As your specialized online personal trainer for GLP-1, I provide:
- Tailored Program Design — A strength training program precisely aligned with your fitness level, energy fluctuations, and specific body composition goals
- Nutritional Integration — Guidance on protein intake and nutrition to support muscle protein synthesis during your caloric deficit
- Addressing Women’s Unique Needs — Deep understanding of how perimenopause and menopause affect muscle mass and bone health, tailoring every session accordingly
- Safe and Effective Execution — Real-time form coaching via Zoom maximizes results while minimizing injury risk
- Motivation and Accountability — Consistent expert support to maintain adherence through periods of fluctuating energy and motivation
Meet Terri Walsh: Your Online Personal Trainer for GLP-1 Strength Training
Terri Walsh is the creator of Active Resistance Training®, a 40-year veteran of the NYC fitness industry, and one of the most trusted online personal trainers for women and men over 50 on GLP-1 medications.
Featured in the New York Times, Self, Women’s Health, Shape, and ESPN2. Former Creative Director of Programming at Crunch Fitness. ACE Certified Group Fitness Instructor and Nutrition Specialist. Delivers online personal training globally via Zoom. At 60+, Terri is living proof that the right strength training practice maintains peak muscle mass, bone density, and vitality through any stage of life and any weight management journey.
Frequently Asked Questions: GLP-1 Strength Training and Muscle Retention
What is the best workout for someone on a GLP-1 medication?
The best workout for GLP-1 users focuses on compound resistance movements — squats, deadlifts, presses, and rows — performed 2–3 times per week with progressive overload. This directly signals the body to preserve muscle while burning fat. Live online personal training via Zoom ensures the program adapts to your energy levels and medication cycle in real time.
How much muscle will I lose on GLP-1 without strength training?
Clinical data from 2024–2026 suggests that without resistance training, 25–40% of total weight lost on GLP-1 medications can come from lean muscle mass. With structured strength training and adequate protein, that figure drops to 10–15% — a critical difference for long-term metabolic health.
Is the A.R.T. Method suitable for GLP-1 users with joint pain or fatigue?
Yes — A.R.T. is specifically designed to be low-impact and joint-friendly while delivering a high-efficiency muscle stimulus. It adapts to your energy levels and physical condition each session, making it ideal for GLP-1 users experiencing fatigue or nausea.
How does online personal training for GLP-1 work via Zoom?
All sessions with Terri Walsh are conducted via live Zoom. Real-time coaching allows Terri to monitor your form, adapt intensity to your energy levels that day, and progress your training safely — delivering the same expert guidance as in-person training from anywhere in the world.
Why is muscle retention especially important for women on GLP-1 medications?
Postmenopausal women are already at elevated risk for muscle loss, bone density decline, and metabolic slowdown due to falling estrogen levels. GLP-1-driven rapid weight loss compounds all three risks simultaneously. Specialized GLP-1 strength training that addresses these hormonal factors is essential — not just general fitness programming.
Maximize Your GLP-1 Results with Expert Online Personal Training Today
To truly unlock the full transformative potential of your GLP-1 journey, a proactive commitment to strength training for muscle retention is non-negotiable. By prioritizing muscle health, you achieve a more favorable and sustainable body composition, maintain your weight loss long-term, and significantly enhance your overall vitality.
Ready to optimize your GLP-1 results and build lasting strength?
Fill out the consultation request form and take control of your health from anywhere!
ALSO INCLUDED: A.R.T. Virtual Studio Membership
Online personal training also includes all the online fitness content: LiveStream Classes, OnRamp, Newbie Series, Fundamentals, Beginner Series, ART Mat 1.1-28.4, Holis Series, Covid Series LIVE, Stretch & Mobility, Components, MasterClasses, Prescriptives, New Series, and 2021 Releases,
⚡️Practice on your schedule.
⚡️Classes stream to all devices.
⚡️Over 800+ classes, workouts & series.
⚡️Beginner. Intermediate. Advanced.
Monthly Recipe Packs & Meal Plans
EAT WELL Recipes by Terri Walsh, a monthly compilation of delicious, easy-to-make recipes with easy-to-find ingredients. You’ll save time with meal prep, and all your macros are available with a scan code for myfitnesspal – so you can track to your heart’s content or not. And…again…they’re EASY AND DELICIOUS. They include:
⚡️New recipe pack every month
⚡️Printable PDF’s
⚡️Simple recipes, step by step
⚡️breakfasts, lunches, dinner and deserts!
⚡️accommodates gluten-free, dairy-free, meat-free
⚡️shopping lists
⚡️snack smoothies and protein fruit bowls
⚡️meal planner calendar
Who is Terri Walsh?
Terri Walsh is the creator of the Active Resistance Training® Method, a celebrity personal trainer, and a 40-year veteran of the fitness industry in NYC. She now continues her personal training sessions online as well as teaches livestream fitness classes exclusively since her move to Costa Rica in 2014.
Terri was the first Creative Director of Programming at Crunch Fitness and she also headlined five different shows on Crunch Fitness’ ESPN2, including “Washboard Abs” videos. She created the “Yoga Block Workouts,” which were featured in Self, Women’s Health, Shape, Crunch Gyms, and many more. Terri is an ACE Certified Group Fitness Instructor and Nutrition Specialist. She’s been interviewed, quoted, and featured in numerous beauty, fashion, print, and television media for the length of her continuing career.
See HERE for media where Terri Walsh is featured
Terri believes EVERYBody is a work of A.R.T. and that Movement Cures Everything.
Testimonials
I’m on my fourth body with Terri. Let me explain: I started with Terri weighing 25 pounds more than I wanted to, and desiring to feel strong and fit again. When she asked me to name one specific goal, I told her I wanted to be able to do a perfect pushup. A few short months later, I was down 15 pounds and was up to 30 “perfect pushups”- 3 reps of ten. It was around that time that I had a terrible accident and shattered my left wrist. In addition to being in constant pain, my equilibrium was in turmoil. This began body number 2. Terri worked out a training plan to keep me fit and moving toward my goal, without endangering my wrist, and also made sure the arm and shoulder muscles on my left side stayed a part of the action. I lost zero strength. Once the multiple breaks were healed, Terri retrained the wrist. Unfortunately, that same year, I had to go in for an emergency gall bladder surgery, which was successful , but the findings from that surgery necessitated a second surgery- this one more intense. Terri and I trained to get my strength up to maximum fitness, so that I could recover better from that second surgical intrusion, and thanks to her, I did. I had a very long hospital stay, during which Terri accompanied me via zoom on increasingly long walks around my ward. She kept me strong. My surgeons acknowledged that it was the workouts, my prior conditioning, and my determination to heal that got me out of there.
Enter body number 3: I lost too much weight in the hospital. I weighed in at 103, with excellerated bone density loss due to mitigating circumstances. Terri’s mission then was to build me back up- damn near from scratch. Terri’s carefully planned and measured workouts rebuilt my musculature completely. I had five compression fractures in my back- and Terri worked a program to help me heal it all. It took a year, but we got me literally put back together again.
Body number 4: I am now at the perfect weight, with high flexibility, and actually impressive strength. Body number four is healed, and getting stronger daily. Pushups? Not yet. But we’ll get there.
Dianne
ART has not only changed my life, but has saved it. For a long time I was trapped in a cycle of disordered eating and behaviors, self hate, and dysmorphia. Doing the same harmful things over and over, terrified of shifting my mentality, and only viewing exercise as a punishing means to an end I would never reach. One day I woke up and asked Terri if I should delete my calorie counting app, and she held my hand in that pivotal moment.Through covid we worked together to reach new goals, break old habits, and instill a self confidence I didn’t know was possible.Three years later I’ve become one of those people who works out for health, performance, and strength. Together we build the body I’ll be in for the next chapters of my life – Looking hot was just a great side effect of mental growth.
This practice will change you, and if you’ve ever struggled like me, it could save you.
Working with Terri is incredibly effective. For three years I traveled all over the world with rather unpredictable schedule. Having Terri accessible over Zoom has been the only constant routine I look forward to. She’s so skilled and adaptive — always able to find something in my surroundings to use as exercise devices no matter where. I worked quite a bit on specific things with Terri — surf training, posture adjustments, restorative and pain management from sports. Her method is so solid that I always have it in my practice even when I work out on my own.
Terri is so supportive. Stern so you improve, and always so encouraging. At 46, exercise is such an important part of health. I so appreciate how far I have come with her support.
In the electric buzz of late 80’s & 90’s New York City, amidst neon signs and bustling streets, one name stood out in the realm of personal training: Terri Walsh. Now, in the tranquil beauty of Costa Rica, her legacy of unparalleled fitness expertise shines brighter than ever.
Age might be just a number, but in Terri’s case, it’s a testament to her profound understanding of health and the human body. Just turned 60, she not only epitomizes vitality but also inspires it in everyone around her. Her extensive experience, traced back to those days when she electrified the NYC fitness scene, is palpable in every training session, every piece of advice, and every transformation she facilitates.
Loyalty is an oft-used word, but with Terri, it’s a lived experience. Her unwavering commitment to her clients, irrespective of their fitness levels, is genuinely heartwarming. Whether you’re a novice taking your first steps or an athlete pushing boundaries, she’s there, steadfastly guiding, supporting, and cheering for you.
Her open-minded approach is the cherry on top. This trait ensures she is continually evolving, embracing new techniques, and blending them with tried and true methods. Paired with her innate kindness, Terri creates a training environment where one feels seen, heard, and most importantly, believed in.
Today, as I reflect upon my own journey, I recognize that it wasn’t just about achieving a fitter physique but about embracing a more fulfilled life. And for that, I am forever grateful to Terri Walsh. If you’re looking to not just transform your body but elevate your entire being, look no further. This NYC gem, with Costa Rican Pura Vidaflair, is the beacon you’ve been seeking.
Terri Walsh is an artist and bodies are her canvas. Terri has been a fixture in my life for over 20 years, and she is my go-to whether I need to get into top shape for a special event or to recover from an injury. And she has never let me down.
What I adore about her & her technique is that she can give you a low-impact workout that you feel for days… Anyone can get your heart rate up by making you do mountain climbers. There is no ART to that. But Terri ensures her training combines sculpting and cardio and has honed her technique for years. She is a master teacher.
Whatever you want: to get those six-pack abs you’ve been craving, to lose a few pounds, or to get your fitness to the next level – Terri is your answer.
You will not regret it.
Terri is pleasure to train with because she is an expert in her field and a terrific person. She takes time to evaluate the strengths and needs of clients and will create a plan to help you achieve your goals. You will be challenged but you will also feel safe, seen and heard.
Terri Walsh is a truly excellent trainer. Outstanding master of her craft; incredibly bright with a treasure trove of health and fitness knowledge; expert and creator of Active Resistance Training which encompasses knowledge based in dance, yoga, martial arts, weight training; and a warm, spontaneous personality that make workouts fun. She is the perfect combination of tough (“Terri you are KILLING me!”) and warm (“Valerie, you are doing SO well”), and she works with the whole person — mentally, emotionally and physically. Because of her efforts, I am stronger and more flexible, I have better balance and most importantly, she provides the perfect scenario for success and sets foundations for a new healthier lifestyle. Terri is brimming with the brains to help anyone achieve the brawn. She’s the real deal in an industry full of “wannabes” and is the standard by which any trainer should be measured.
Terri is fantastic. She is an innovative, results-driven, and dedicated fitness expert. I highly recommend working with her!
I have been working with Terri on and off for the last 10 years, and she has been an instrumental part of my life. From helping me along in my weight loss journey to helping me build confidence, Terri can do it all! She is definitely one of the best trainers out there with plenty of experience and knowledge!
Terri was quite simply the best trainer I’ve ever had (and I’ve had a few). Why was she the best? Well for starters, she knew how to push me in a way that was conducive to my own personality. She was comforting yet strong, pushy yet understanding. She taught you how to listen to your body – to push it to its limits but also to protect it from harm. And she genuinely cared. She was invested in your journey – she cared when you struggled, she celebrated when you succeeded. And it was this general attitude that had me down a full size in a month – not just the working out and the food adjustments, but the fact that I believed I could do it and I had a support system to help me when things got tricky.
Terri is an outstanding trainer in a field where you are never certain what to believe- the fads change with every celebrity that endorses a type of exercise or diet. Terri has an incredible foundational understanding of the body and how to help you reach you true potential. She always helped me push myself and gave me an appreciation for the importance of stretching. I always had full trust in her when we worked together. Anyone who trains with her can count themselves lucky to get to work with such a knowledgeable person, who also happens to be a wonderful person.
I trained with Terri at her studio in New York for several years, and many years before that, I trained at Revolution, a gym she started in NYC. So, in one way or another, I have been training with Terri for well over 10 years! She is incredibly knowledgable, committed to form and results, and a fantastic advocate for her clients’ capacity for change through the power of movement and consistency. She is an exceptionally skilled professional whose form- and results-based training is some of the best around. Her online program is a fantastic way to bring her skills with you wherever you go, and is delivered with Terri’s trademark motivational and accessible style. Highly recommended!
As a former client of Terri Walsh I know her to be a passionate and knowledgeable fitness professional and lots of fun to work with. Whenever I’m o the east coast she is my choice to train with.
Angela Bullock – Actor
I’ve worked with Terri several times over the past five years. She is my go-to resource when it’s time for me to reevaluate my fitness goals, adjust my workouts because of a crazy schedule, or when I just need to get my butt kicked back into shape. Terri is not only extremely knowledgeable, but she is also one of the most motivating people I know. If you’re willing to put in the work and follow her instructions, Terri can help you get the results you want.
I have been attending Terri’s classes for the past year and a half and absolutely love what she has to offer. The great thing about Terri’s classes is the personal attention and small class size. It’s like getting your own personal trainer without the hefty price tag!
Terri got me great results in a short period of time. It was a complete program and I was in the best shape ever! I would use Terri and her team again.
Terri’s workouts and work ethics are top notch. She will get you results and you will have lots of fun doing it!
Terri is a true professional and has consistently delivered over and above my expectations from a trainer. As well as providing varied and innovative workouts, she is also very caring and willing to help out at any time. Highly recommended both on a professional and personal level.
I worked with Terri to get in shape for my wedding and couldn’t have been more pleased with the results. Teri is a true professional, incredibly knowledgable and taught me a whole new approach to fitness. She is incredibly motivating and her ART Method works, you really do get results and feel great. I would recommend Teri to anyone looking for superb attention to detail and great training/small group bootcamps.
I have been training with Terri for a year and a half. I can’t say enough good things about working with her. I have never been able to stick with a gym or trainer, but love coming to her classes. Terri designs the classes to benefit each individual. They are super challenging and results driven. She is always available for support, advice and meal planning. If you want to change your body just listen to Terri she will get you there!
Terri’s bootcamp classes have been a life-saver for me. Not only did I get fit after the first few months of classes a few years ago (I’ve been a client since 2009), but I’ve also been able to maintain my results by following Terri’s sensible nutrition and exercise advice. Every class is different and based on the group’s needs, and everyone receives feedback and personal attention. Classes, which are based on active resistance, get progressively more difficult — it’s a fresh set of unpredictable movements every time.
This is nothing like a regular gym where you are anonymous — you are held accountable for your progress, monitored, and coached all along the way and given the tools and encouragement needed for long-term success.
Terri has created a fitness program that is accessible to women at all levels and that WORKS! It only took Terri one consultation to diagnose the dietary issues that were keeping me from success and provide me with a manageable plan for changing my eating habits. I’ve been able to stick with it and have completely kicked the sugar cravings and associated low energy. By following Terri’s advice and doing the ART Method workouts, I’ve lost 20 lbs and taken 5.5″ off my waist in less than two months. Highly recommend working with Terri.
Terri is the best personal trainer in NYC. She has a lot of integrity and really cares about what she’s doing. She doesn’t create ridiculous gimmicks or recommend insane diets like many of the other so-called celebrity trainers out there — yet she gets results. When I recommend a trainer in NYC, Terri is usually the first name on the list.
Terri and her apprentices are definitely experts in their field. Aside from the wonderful results, I’ve come away with knowledge that will guide me for a lifetime. I would recommend TW Training to anyone wanting a real change in their health and their lives!
Join Our Newsletter
Inside offers, Recipes & Fitness tips every month
For a limited time, join our newsletter to receive our Healthy. Easy. Delicious. Christmas Recipe Pack. FREE! 10 healthy and delicious recipe pdf download.
Featured In
