The short answer: the best way to keep muscle as you age is to work your muscles against resistance at least twice a week and to eat enough protein. Mayo Clinic says strength training can help you keep and even increase muscle and strength as you get older. You don’t need a gym, and it’s worth starting wherever you are now.
The shopping bags feel heavier than they used to. You reach for the rail on the stairs without thinking. Getting up from a low sofa now takes a small push from your hands.
These changes creep in quietly, and they’re easy to put down to being tired or out of practice. Some of the time, they’re your muscles asking for more work.
What is sarcopenia, in plain words?
Sarcopenia is the gradual loss of muscle mass, strength and physical performance as we age. Think of it as muscles slowly shrinking and weakening unless you give them a reason to stay.
Cleveland Clinic says the main cause is aging itself. Muscle fibers get smaller and fewer, and the body makes less muscle protein. Being inactive, some long-term conditions, smoking and alcohol can add to it. So can losing weight, especially without regular strength training.
How fast do you lose muscle?
Estimates vary, so treat these as rough guides, not exact figures:
- Cleveland Clinic says loss starts in your 30s or 40s and speeds up between 65 and 80, with as much as 8% of muscle mass lost each decade.
- Harvard Health says muscle mass can decline by 3% to 5% a decade after age 30.
- The British Dietetic Association says the average adult loses about 250 grams of muscle a year between 30 and 60, and that loss speeds up to about 15% a decade at around age 70.
The numbers differ, but the direction is the same: slow at first, then faster later on. That’s a good reason to act before it gets in your way.
Muscles need food as well as work
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Signs to watch for, and a simple way to check
Cleveland Clinic lists these common signs:
- Muscle weakness, which is the most common symptom
- Less stamina
- Slower walking and trouble on stairs
- Poor balance or falls
- Everyday tasks getting harder
- Muscles that look smaller
Doctors can check for it using a short questionnaire called SARC-F, along with tests like grip strength and a 30-second chair stand, which counts how many times you can stand up from a chair. These checks are for a clinician to interpret, but if the signs above sound familiar, it’s worth asking about them.
Strength work: the habit that matters most
Cleveland Clinic lists resistance training first among the ways to treat sarcopenia. Harvard Health quotes an expert who calls progressive resistance training the best way to build muscle at any age. “Progressive” just means the work gets a little harder over time.
In a large review reported by Harvard Health, covering 49 studies of men aged 50 to 83, people gained an average of 2.4 pounds of lean body mass. That review only covered men, and results vary from person to person, but Cleveland Clinic and Mayo Clinic recommend strength work for adults in general.
Mayo Clinic’s advice is refreshingly simple:
- How often: at least two times a week, for all major muscle groups. About 20 to 30 minutes each time can be enough to notice stronger muscles.
- How much: one set of each exercise is enough for health and fitness benefits.
- How hard: choose a weight or resistance that tires your muscles after about 12 to 15 repetitions.
- When to step up: once you can easily do more repetitions, gradually add a little more weight or resistance.
- Recovery: rest one full day between working each muscle group.
| You have | Try |
|---|---|
| Just your body | Squats, lunges, planks and push-ups |
| Water bottles | Use them as light hand weights, as Mayo Clinic suggests |
| Resistance bands | A cheap, light way to add resistance at home |
| A gym | Dumbbells, kettlebells or weight machines |
| A garden or shopping bags | Heavy digging or carrying heavy shopping, which the NHS counts as strength work |
If you have a long-term condition, or haven’t been active for a while, talk to your doctor first. Warm up with a few minutes of brisk walking. And Mayo Clinic is clear: if an exercise causes pain, stop. Try a lower weight, or try again in a few days. If your back is what holds you back, start with our guide to exercises for lower back pain.
How much protein helps?
Muscles are built from protein, but the right amount isn’t settled. The ESPEN expert group recommends at least 1.0 to 1.2 grams per kilogram of body weight a day for healthy people over 65. For a 70kg person, that’s about 70 to 84 grams. The British Dietetic Association says active older adults may need at least 1.2 grams per kilogram. Cleveland Clinic suggests 20 to 35 grams per meal for people with muscle loss.
The evidence has limits too. A 2026 trial of 295 frail older adults added protein support to 12 weeks of supervised strength training. Overall, it gave no significant extra gain. People who were eating less protein to begin with seemed to gain more strength from it, but the authors say that finding needs confirming in larger trials. So protein supports the work, but it doesn’t replace it.
The practical step is to include a good protein food at every meal, starting in the morning. Our guide to high protein breakfast ideas shows the grams in everyday foods. Ask your doctor or a dietitian first if you have a health condition or a special diet.
The other habits that help
- Move on your other days. The NHS advises older adults to be active daily, get at least 150 minutes of moderate activity a week and break up long periods of sitting.
- Practice balance. Yoga, tai chi and similar work count toward your strength, balance and flexibility days.
- Add strength when you diet. Cleveland Clinic warns that weight loss can add to muscle loss, especially without strength training.
- Ask about your medicines. Cleveland Clinic suggests reviewing long-term use of proton pump inhibitors, a type of heartburn medicine, with your provider.
There’s no shortcut here. Cleveland Clinic says the FDA hasn’t approved any medicine for sarcopenia, which makes these everyday habits your main tools.
Your next step
Pick two days this week. Do one set of squats to a chair and one set of wall push-ups, then add a third move next week. Keep it small enough that you’ll actually do it. Then check your plate with our free 7-day meal plan.
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Quick questions
What is sarcopenia?
Sarcopenia is the gradual loss of muscle mass, strength and physical performance that comes with age. Cleveland Clinic says the most common symptom is muscle weakness.
At what age do you start losing muscle?
Cleveland Clinic says muscle loss starts in your 30s or 40s and speeds up between ages 65 and 80. Estimates of how fast vary between sources.
How often should I do strength training?
Mayo Clinic gives the US guideline of strength exercises for all major muscle groups at least two times a week. It says one set of each exercise is enough for health and fitness benefits.
Is walking enough to keep muscle?
Walking is good for you, but it doesn’t replace strength work. NHS guidelines list strength, balance and flexibility work on at least 2 days a week on top of aerobic activity.
Can you rebuild muscle later in life?
Often, yes. Mayo Clinic says strength training can help you keep and increase muscle as you get older, and that you can keep increasing your strength no matter where you started. How much you gain varies.
This article is general information, not medical advice. If you’re worried about weakness, falls or muscle loss, please talk to your doctor.
Sources
- Cleveland Clinic. Sarcopenia.
- Mayo Clinic. Strength training: Get stronger, leaner, healthier. June 2026.
- NHS. Physical activity guidelines for older adults.
- Harvard Health. Preserve your muscle mass. 2016.
- British Dietetic Association. Addressing sarcopenia.
- Deutz NEP and others. Protein intake and exercise for optimal muscle function with aging: Recommendations from the ESPEN Expert Group. Clinical Nutrition, 2014.
- Effect of a protein intervention during resistance training with varying training intensities on muscle outcomes in frail community-dwelling older adults: a randomized controlled trial. The Journal of Nutrition, Health & Aging, 2026.