Strength training for women on GLP-1: a plan for muscle and bone
Women on a GLP-1 medication should strength train 2–3 times a week, working the big muscles (legs, hips, back, chest, arms) with weights heavy enough that the last few reps of each set feel hard. It matters more for women than it sounds: you lose muscle and bone along with fat on these drugs, and from your 40s menopause speeds up both losses. Two 30–40 minute sessions at home, enough protein, and a little more weight every couple of weeks is the plan below.
Below: why women have more to protect, how much to do, a two-workout plan with sets and reps, how to pick your first weight, what to do about bone, pelvic floor and joints, how to train around shot day and nausea, and how to tell it's working.
Why women on GLP-1 have more to protect
Some of the weight you lose is muscle
When the STEP 1 trial scanned a group of people on semaglutide with DEXA, close to 40% of the weight they lost was lean mass (muscle plus water, organs and other non-fat tissue). Lean mass is not all muscle, and some loss is expected with any weight loss, but the share is big enough to take seriously. Our guide on what percentage of weight loss on GLP-1 is muscle has every trial's number in one table.
Women start with less muscle and lose it faster after 40
Women carry less muscle than men of the same weight, so each pound lost from muscle is a bigger share of what you have. Muscle declines with age in everyone, and falling estrogen around menopause speeds it up. Less muscle means a lower ceiling for strength: getting up from the floor, carrying shopping, climbing stairs and catching yourself when you trip.
Bone goes with it
The US National Institutes of Health notes that women can lose up to 20% of their bone density in the 5–7 years after menopause. Weight loss adds to that: a lighter body loads bone less. In a 2024 trial in JAMA Network Open (Jensen and colleagues), adults with obesity who took liraglutide for a year without an exercise programme lost bone density at the hip and spine compared with those who exercised. The group that took liraglutide and exercised lost the most weight but kept their hip and spine bone density, compared with placebo. That's one trial on one medication in adults under 65, but it points the same way as everything we know about bone: load it, or lose it.
Lost muscle doesn't come back on its own
If weight returns later, it tends to come back as more fat than muscle. A study of 78 postmenopausal women in the American Journal of Clinical Nutrition (Beavers, 2011) found that for every kilogram of fat regained in the year after a diet, only about 0.12 kg of lean tissue came back, against about 0.26 kg lost per kilogram of fat during the diet. Keeping muscle while you lose is far easier than rebuilding it later.
How much strength training do women on GLP-1 need?
The US Physical Activity Guidelines ask all adults to do muscle-strengthening work for every major muscle group on 2 or more days a week. That's a good floor on a GLP-1 too. A practical target:
| Starting out (weeks 1–4) | Settled in (week 5 on) | |
|---|---|---|
| Sessions a week | 2 | 2–3 |
| Length | 25–30 minutes | 30–45 minutes |
| Exercises | 5–6 for the whole body | 6–8 for the whole body |
| Sets per exercise | 1–2 | 2–3 |
| Reps per set | 10–15 | 8–12 |
| How hard | Stop with 3 reps left in the tank | Stop with 1–2 reps left |
| Rest between sets | 60–90 seconds | 60–120 seconds |
Leave at least one day between sessions for the same muscles. Monday and Thursday works; so does Tuesday, Friday and Sunday. On top of this, the same guidelines ask for 150 minutes a week of moderate activity such as brisk walking. Walking doesn't replace strength work for muscle; our guide on what exercise to do on GLP-1 explains how the two fit together.
"Hard enough": the part most women undershoot
Muscle responds to effort, not to time spent. A set of 12 that you could have done 25 times does little. Use "reps in reserve": at the end of a set, ask how many more good reps you could have done. Aim for 1–3. If the answer is 6 or more, the weight is too light.
Light pink dumbbells are a common trap. For most women, the right weight for a goblet squat or a row is well above what feels "safe" on day one, and it climbs fast in the first months. Heavy, for you, simply means the last 2–3 reps are slow and take focus, while your form still holds.
The plan: two workouts, at home
You need a pair of adjustable dumbbells or 2–3 pairs of fixed ones (for example 8, 12 and 20 lb), a sturdy chair, and a step or the bottom stair. Alternate workout A and workout B. Warm up first with 5 minutes of marching, arm circles and 10 slow chair squats.
Workout A
| Exercise | Sets × reps | Easier | Harder |
|---|---|---|---|
| Goblet squat (one dumbbell held at the chest) | 2–3 × 8–12 | Sit-to-stand from a chair | Pause 2 seconds at the bottom |
| One-arm dumbbell row, hand on a chair | 2–3 × 8–12 each side | Lighter dumbbell | Slow 3-second lowering |
| Romanian deadlift (dumbbells, hinge at the hips) | 2–3 × 8–12 | Hip hinge with no weight | Heavier, or one leg at a time |
| Push-up | 2–3 × 6–12 | Hands on a counter or wall | Hands on a low step, then the floor |
| Farmer carry (heavy dumbbell in each hand) | 3 × 30–40 steps | Lighter, shorter walk | Heavier, or one hand only |
| Dead bug | 2 × 6–8 each side | Move legs only | Hold a light dumbbell overhead |
Workout B
| Exercise | Sets × reps | Easier | Harder |
|---|---|---|---|
| Step-up onto a stair or step | 2–3 × 8–10 each leg | Lower step, hold a rail | Dumbbells in each hand |
| Glute bridge | 2–3 × 10–15 | No weight | Dumbbell on the hips, or one leg |
| Overhead press, seated or standing | 2–3 × 8–12 | One arm at a time | Standing, slower lowering |
| Split squat, holding a chair | 2–3 × 8–10 each leg | Shorter range | Dumbbells, no chair |
| Bent-over two-arm row | 2–3 × 10–12 | Chest on an incline (cushions on a chair) | Heavier |
| Side plank, knees bent | 2 × 15–30 seconds each side | Against a wall | Legs straight |
Gym member? Swap in a leg press, a cable or machine row, a chest press and a lat pulldown at the same sets and reps. Our main guide to strength training on GLP-1 has a gym version and more on progression.
How to pick your first weight
- Choose a weight you think is a little light.
- Do 10 good reps and stop. Rate how many more you could have done.
- More than 5 left? Go up a size for the next set. 1–3 left? That's your working weight. Couldn't finish 10 with good form? Go down.
- Write it down. The notebook is what makes the next step possible.
When to go up
Use the "two for two" rule: when you can do 2 more reps than the top of the range (14 instead of 12) on your last set, two sessions in a row, add weight next time, about 2–5 lb for arms and 5–10 lb for legs. Then work back up the reps. With adjustable dumbbells this is easy; with fixed ones, use slower lowering or a pause until you can move up a pair.
Bone: what helps and what to check
- Load through your legs and spine. Squats, step-ups, deadlifts and carries put useful stress through the hip and spine, where fractures matter most.
- Impact, if it suits you. For women without osteoporosis or pelvic floor symptoms, small jumps or heel drops (rise onto your toes, drop onto your heels) add bone-loading impact. Start with 10, a few days a week.
- Heavier, supervised training is an option even with low bone mass. The LIFTMOR trial in Australia (Watson, Journal of Bone and Mineral Research, 2018) had postmenopausal women with low bone mass lift heavy under close supervision; bone density at the spine and hip improved and there were no fractures from the training. That was supervised; don't copy it alone.
- Check your bones. The US Preventive Services Task Force recommends bone density screening for women 65 and over, and for younger postmenopausal women at higher risk. Rapid weight loss is worth raising with your doctor if you're near that line.
- Calcium, vitamin D and protein. Small appetites make it easy to fall short. Dairy, canned fish with bones and fortified foods help; ask your doctor before adding supplements.
Already told you have osteoporosis? Ask for a referral to a physical therapist before lifting heavy, and avoid deep forward bending with weight (toe-touches, sit-ups) until they've seen you.
Pelvic floor, joints and other things women ask about
Leaking when you lift or jump
Common, and not something to push through. Breathe out as you lift (on the way up from a squat, as you press), don't hold your breath, and skip the jumps for now. If it keeps happening, a pelvic floor physical therapist is the right person; many women get better quickly with a few visits.
Knees
Swap the squat for a box squat to a high chair, the split squat for a shorter step-up, and keep the movement in a range that doesn't hurt. A dull muscle ache is fine; sharp joint pain is a sign to stop that exercise and try the easier version.
Shoulders and wrists
Press with your palms facing each other, do push-ups on fists or dumbbell handles, and keep the overhead press seated if your back arches.
Menopause symptoms
Hot flushes and broken sleep make evening training harder for many women. Morning or lunchtime sessions in a cool room tend to suit better. Whether menopause hormone therapy is right for you, including for bone, is a conversation for your doctor.
Training around shot day, nausea and a small appetite
- Find your worst day. Many people feel queasiest or most tired 1–3 days after a weekly dose. Put your sessions on your best days, and keep a 10-minute mini session (squats, rows, carries) for the weeks a dose goes up.
- Don't train empty. A small snack with some protein 60–90 minutes before (a yogurt, half a protein shake, a cheese stick and crackers) helps against dizziness.
- Protein after. Aim for 20–30 g of protein in the meal after training. Our guide on how much protein to eat on GLP-1 sets your daily total, usually 1.2–1.6 g per kg of a healthy goal weight.
- Water. Smaller meals mean less fluid from food. Drink through the session; light-headedness is a cue to sit down and stop.
- Feeling rough? Do the warm-up and one set of each. If you feel worse, stop for the day. A skipped session doesn't cost muscle; a month of them does.
Your first 12 weeks
| Weeks | Sessions | What to do | Goal |
|---|---|---|---|
| 1–2 | 2 a week | 1–2 sets per exercise, easier versions, 3 reps in reserve | Learn the moves; find your weights |
| 3–4 | 2 a week | 2 sets, standard versions | Write down every weight and rep |
| 5–8 | 2–3 a week | 2–3 sets, 1–2 reps in reserve, use the "two for two" rule | First weight increases on most moves |
| 9–12 | 2–3 a week | 3 sets, harder versions where ready | Stronger than week 1 on every move |
After week 12, keep going the same way. Every 8–10 weeks, take an easier week (half the sets) and change one exercise per workout to keep it fresh.
How to tell it's working
The scale can't tell muscle from fat, so track strength and how you move.
- Your notebook. Weights and reps going up across most exercises is the best sign you're keeping muscle.
- 30-second chair stand. Count how many times you can stand up fully from a chair, arms crossed, in 30 seconds. Repeat every 4 weeks. It should hold or rise as you lose weight.
- Waist and photos. A shrinking waist with rising strength means most of the loss is coming from fat.
- Daily life. Stairs, getting off the floor, carrying bags.
- A body scan, if available. Some clinics offer DEXA, which estimates fat, lean mass and bone.
Strength dropping for 3–4 weeks while you're trying? Look at protein first, then sleep, then how hard your sets are. Our guide to symptoms of muscle loss on GLP-1 lists the signs and home tests.
Safety: when to check first, and when to stop
Talk to your doctor before starting if you have heart disease, chest pain with effort, uncontrolled blood pressure, diabetes treated with insulin or a sulfonylurea (exercise can drop blood sugar), osteoporosis or a recent fracture, or a recent operation. Stop and get help for chest pain or pressure, fainting, unusual breathlessness, or a racing or irregular heartbeat.
Common mistakes
- Only cardio. Walking, classes and the bike are good for your heart; they don't protect muscle the way lifting does.
- Weights that are too light. If a set never gets hard, it isn't doing the job.
- Waiting to start until the weight is off. The muscle is lost on the way down. Start now.
- Too little protein. Training without protein is half a plan.
- Doing a different video every day. Repeating the same moves and adding weight is what builds strength.
- Pushing through leaking or joint pain. Change the exercise, and get it checked if it keeps happening.
Questions people ask
Will lifting weights make me bulky?
No. On a GLP-1 you're eating less than you burn, which makes adding a lot of muscle hard for anyone. The realistic aim is to keep the muscle you have and get stronger, which shows as firmer, smaller, not bigger.
Is it too late to start at 55, 65 or 75?
No. Muscle responds to training at any age: in a well-known study (Fiatarone, JAMA, 1990), frail people in their 90s got much stronger in 8 weeks of leg training. Start with the easier versions and build up.
Can I do strength training with no equipment?
For the first weeks, yes: chair squats, wall or counter push-ups, glute bridges and step-ups. Within a month or two most women outgrow body weight for the legs, which is when a pair of dumbbells pays off.
Is Pilates or yoga enough?
They help with balance, mobility and core control. Unless they add progressively heavier load, they don't replace lifting for muscle and bone. Keep them as extras if you enjoy them.
How long until I see a difference?
Most beginners get noticeably stronger in 4–8 weeks, much of it the body learning the moves. Changes you can see take longer and are partly hidden by the weight loss itself.
Should I keep training after I stop the medication?
Yes. A 2024 follow-up of a Danish trial found people who had exercised kept more of their weight loss in the year after stopping liraglutide. Our guide to weight gain after coming off GLP-1 has the plan for that year.
Start with your protein number
Training only keeps muscle if the protein is there. The free 2-minute check gives your daily target in grams and what to work on first.
Show my protein gapMore on eating and training on weight-loss medication: all our muscle plan guides.
Sources: Fiatarone M.A. et al., high-intensity strength training in nonagenarians, JAMA, 1990. Wilding J. et al., STEP 1, NEJM, 2021 (DEXA substudy). Jensen S.B.K. et al., bone health after exercise alone, liraglutide, or both, JAMA Network Open, 2024. Beavers K.M. et al., lean mass during weight regain in postmenopausal women, Am J Clin Nutr, 2011. Watson S.L. et al., LIFTMOR, J Bone Miner Res, 2018. NIH Osteoporosis and Related Bone Diseases National Resource Center (NIAMS), bone loss after menopause. US Preventive Services Task Force, osteoporosis screening, 2025. US Department of Health and Human Services, Physical Activity Guidelines for Americans, 2nd edition. Jensen S. et al., weight after stopping liraglutide with and without exercise, eClinicalMedicine, 2024. This guide is about exercise and food, not medical advice; keep to your doctor's advice.