GLP-1 medications have changed the possibilities for weight management. By reducing appetite and helping people eat less, they can make meaningful weight loss achievable. But as the pounds come off, another goal deserves equal attention: preserving muscle.
That is why strength training should become a central part of a GLP-1 weight management plan. A joint advisory from four major medical and nutrition organizations emphasizes that increasing protein alone is unlikely to adequately preserve muscle without structured resistance training.
The goal is to lose excess fat while protecting the strength, mobility, and metabolic health that support an active life.
Why Muscle Preservation Matters
Weight loss generally includes some loss of lean tissue, whether it happens through medication, dietary changes, or surgery. However, “lean mass” and “muscle” are not interchangeable: lean mass measurements include water, organs, and other tissues. A decrease in lean mass does not mean every pound lost was skeletal muscle.
Even with that distinction, protecting muscle matters. Muscle contributes to resting energy expenditure, helps the body use glucose, and enables everyday activities. Maintaining it supports walking, climbing stairs, carrying groceries, and exercising consistently.
Preserving muscle also helps limit one contributor to the decline in metabolic rate that accompanies weight loss. It cannot completely prevent that decline; smaller bodies generally require less energy, but it helps protect the physical capacity needed for long-term weight management. Current obesity care guidance emphasizes adequate protein and resistance training to preserve lean mass, alongside monitoring strength and function.
When appetite becomes much smaller, getting enough nourishment can require deliberate planning. Strength training and nutrition deserve attention from the beginning of treatment.
Give Your Muscles a Reason to Stay
Resistance exercise provides a clear signal: these muscles are needed.
Weights, machines, resistance bands, and appropriately challenging bodyweight exercises can all provide that stimulus. The most useful program is one you can perform safely and repeat consistently.
A practical starting routine includes:
- Two to three sessions each week, with recovery time between sessions.
- Exercises for the major muscle groups, such as chair squats, rows, wall push-ups, step-ups, and a hip-hinge movement.
- A manageable starting workload, perhaps one or two sets per exercise, with controlled technique.
- Gradual progression, adding repetitions or resistance as the exercises become easier.
These are starting ideas to adapt with a qualified trainer or physical therapist. People with limited mobility, joint pain, or little exercise experience may benefit especially from supervised instruction.
Walking and other aerobic activities remain valuable. Include them alongside strength work, which supplies the specific stimulus needed to help preserve muscle during weight reduction.
Track more than body weight. Being able to lift the same weight, rise from a chair more easily, or carry groceries comfortably can reveal progress that the scale misses.
Protein: Make Every Small Meal Count
Protein supplies the amino acids needed to maintain and repair muscle. When GLP-1 treatment reduces appetite, including a protein source at each meal can help keep intake from falling too low.
Higher protein intakes are often advised during weight reduction, with 1.2–1.6 grams per kilogram per day commonly discussed. The appropriate target, and the body weight used to calculate it, should be individualized with a clinician or registered dietitian, especially for someone with obesity or kidney disease.
Useful foods include eggs, Greek yogurt, fish, poultry, tofu, beans, and dairy products. Protein powders can fill a gap when eating enough food is difficult. Try a smaller shake or divide a serving if a large drink feels uncomfortable. The objective is adequate nourishment in portions you can tolerate.
Supplements That May Support Muscle Health
Creatine Monohydrate: A Strong Option for Strength Training
Creatine helps muscles rapidly replenish ATP, the energy used during demanding contractions. It is one of the most studied exercise supplements.
A common maintenance amount is 3–5 grams daily. A loading phase is optional. Creatine monohydrate is the best-studied form, and more expensive versions have not demonstrated consistent superiority.
Trials in older adults show that creatine can improve some strength and lean-mass outcomes when combined with resistance training. That supports its consideration as a training aid, although it does not establish that creatine prevents GLP-1-associated muscle loss.
Creatine may increase scale weight through water retention. Consider this when interpreting weight changes. People with kidney disease should discuss supplementation with their clinician.
myHMB®: A Possible Adjunct When Muscle Loss Is a Concern
HMB—beta-hydroxy-beta-methylbutyrate—is a metabolite of the amino acid leucine. myHMB® is a branded calcium-HMB ingredient, commonly used at approximately 3 grams daily.
A small, randomized trial found that calcium-HMB reduced lean-mass loss during bed rest in older adults. Another trialin older adults with sarcopenia found improvements in several strength and function measures, without significant changes in muscle mass. These findings are encouraging, but they concern specific populations rather than GLP-1 users.
HMB may be worth discussing when muscle loss is a particular concern, such as during inactivity or in an older adult with low strength.
Torabolic®: Preliminary Evidence, With Important Limits
Torabolic® is a branded fenugreek extract studied alongside resistance training. An early controlled study using 500 milligrams daily reported improvements in some strength and body-composition outcomes in resistance-trained men.
Kaneka Ubiquinol®: Cellular Health and Energy
Muscle health also depends on the systems inside muscle cells. Mitochondria convert nutrients into usable energy, making them a logical focus for supplement research.
Kaneka Ubiquinol® is the bioactive form of coenzyme Q10, which is involved in cellular energy production. A small trial found improvements in some measures of mild fatigue with 100 or 150 milligrams daily for 12 weeks. This supports further interest, but it does not demonstrate prevention of muscle loss or improved exercise performance in GLP-1 users.
PQQ
Researchers have investigated PQQ for its effects on mitochondrial signaling and metabolism. PQQ is an emerging option for cellular health, especially around mitochondrial health.
Urolithin A: Promising Research on Mitochondrial Quality
Urolithin A is being studied for effects related to mitophagy, the process through which cells remove damaged mitochondria.
In a randomized trial of older adults, 1,000 milligrams daily for four months improved some muscle endurance measures and biomarkers. A separate trial in middle-aged adults reported improvements in some strength measures. These results make urolithin A promising, but they do not establish that it prevents muscle loss during GLP-1 treatment.
Build a Plan You Can Sustain
Start by scheduling strength sessions and setting an achievable protein target. Use a protein supplement if your food intake falls short, and consider other supportive supplements if they fit your health history and training goals.
Persistent weakness, fatigue, or difficulty eating enough should lead to a conversation with the treatment team. Muscle preservation works best as part of ongoing care, with attention to strength, nutrition, and daily function.
The Bottom Line
As weight comes down, protecting strength deserves to remain a priority.