Strength Training for Women Over 40: Guideline Basics

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Adults, including women over 40, should work all the major muscle groups on at least 2 days a week, according to the CDC’s adult activity guidelines. The Physical Activity Guidelines for Americans add that one set of 8 to 12 repetitions of each exercise is effective, although 2 or 3 sets may be more effective.

I’m a woman over 40, not a trainer, a dietitian or a doctor, so I leaned on federal guidelines, Mayo Clinic and published trials for this guide and linked each one where I use it. My experience, not medical advice: I started GLP-1 injections in May 2024, and what a medication means for your exercise belongs in a conversation with your prescriber.

Table of Contents

How Often Should Women Over 40 Do Strength Training?

At least 2 days a week is the federal minimum, and the CDC says those sessions should work the legs, hips, back, abdomen, chest, shoulders and arms. Mayo Clinic says you may notice stronger muscles after strength training at least two times a week for about 20 to 30 minutes each time, and that you should rest one full day between exercising each specific muscle group.

The American College of Sports Medicine’s 2009 position stand on resistance training for healthy adults recommends 2 to 3 days a week for people new to lifting. That statement covers healthy adults in general, not women over 40 in particular, so treat 2 days as a starting point and add a third only if recovery feels fine. For the bigger question of how strength days fit with cardio, see my guide on how often to work out to lose weight.

Why Does Strength Training Matter More After 40?

Mayo Clinic says lean muscle mass and strength tend to decline with age, and that strength training can help you keep and increase muscle as you get older. It adds that if you don’t replace the lean tissue you lose over time, your body fat percentage will likely go up.

There is also a menopause piece. A 2019 analysis in JCI Insight of women in the Study of Women’s Health Across the Nation found that at the start of the menopause transition the rate of fat gain doubled and lean mass declined, with the changes continuing until about 2 years after the final period. That was an observational study, so it describes what happened and does not show what causes it. A 2023 follow-up in the Journal of Bone and Mineral Research of 539 of those women linked greater lean mass loss during the transition to lower femoral neck bone density and more fractures afterward, again as an association.

Mayo Clinic says strength training protects bone health by stressing the bones and may lower the risk of osteoporosis. The trial evidence on bone is narrower. The LIFTMOR trial randomized 101 postmenopausal women with low bone mass, average age 65, to 8 months of supervised, heavy lifting and impact training twice a week or to a low-intensity home program. The lifting group gained lumbar spine bone density and the home group lost some. Those women were older than most readers here and trained under supervision with a screened program, so please don’t copy it on your own. A 2024 meta-analysis of 12 trials in healthy postmenopausal women found clear gains in strength and fitness from resistance training, with more debate about bone density.

What Are the Best Strength Exercises for Women Over 40?

No study cited here ranks one exercise above another, so the best choices are the ones that cover the muscle groups the guidelines name and that you can do with good form. Mayo Clinic lists push-ups, planks, lunges and squats as body weight options, and says you can also use resistance tubing, dumbbells and barbells, or water bottles and other light household items.

Here is an example week I built from those guideline numbers. It is not a program tested in a trial.

Day A: squats, Romanian deadlifts with dumbbells, dumbbell or band rows, and a plank.
Day B: lunges, glute bridges, push-ups (on a counter or the wall if floor push-ups are too hard), and an overhead press.

Do Day A and Day B on 2 non-consecutive days, then add a third session after a few weeks if you want one. Mayo Clinic suggests warming up with a few minutes of brisk walking first. Stop an exercise that causes pain, and consider a lower weight or trying it again in a few days.

How Many Sets and Reps Should Women Over 40 Do?

Start with 1 set of 8 to 12 repetitions per exercise, then move to 2 or 3 sets as it gets easier. That follows the guidelines, which say the effort should reach the point where another repetition would be difficult. Mayo Clinic suggests a weight that tires your muscles after about 12 to 15 repetitions and says a single set of 12 to 15 can build muscle efficiently in most people.

The weight has to change over time for the muscles to keep adapting. The guidelines say increases in the amount of weight or the days a week of exercising will result in stronger muscles. The American College of Sports Medicine statement suggests raising the load by 2 to 10 percent when you can do one or two more repetitions than your target. If you want to learn form before adding weight, Mayo Clinic recommends working with a trainer or other fitness specialist.

Do You Need a Gym for Strength Training?

No. Mayo Clinic says you can do strength training at home or in the gym. If you’re starting out, a set of bands is a low-cost way to add resistance, and I put together resistance bands workout ideas for women on a separate page. If you’d like a week-by-week layout that adds cardio minutes, see my at-home workout plan for women over 40.

I can’t tell you from a study that home training builds the same muscle as a gym. The sources above show that resistance work in general builds strength, and they don’t compare locations.

Does Strength Training Help Women Over 40 Lose Weight?

Exercise on its own usually produces modest weight loss. A 2014 review in Progress in Cardiovascular Diseases concluded that unless the volume of aerobic exercise is very high, clinically significant weight loss is unlikely, and that aerobic programs consistent with public health recommendations may promote up to about 2 kg (roughly 4.4 pounds) of weight loss, with big differences from person to person. That review covered aerobic exercise, not strength training.

The Physical Activity Guidelines say muscle-strengthening helps promote weight maintenance, although not to the same degree as aerobic activity, and that it can help maintain lean body mass during weight loss. They also say combining calorie reduction with physical activity tends to be most beneficial. In a 2023 meta-analysis of 101 trials with 5,697 postmenopausal women, subgroup analyses found resistance and combined training did more for muscle mass, while aerobic and combined training did more for fat mass, and the authors said combining the two may be a viable strategy. Those were postmenopausal women, so it may not describe a woman of 41 who still has periods. I’m not promising pounds from lifting. See my exercise for weight loss guide for women for the wider picture.

Is an App Worth It for Structured Strength Training?

It might be if planning is what stops you, but I have not used SHRED, so this describes what the maker says and not how it feels to train with it. The SHRED site, read on 2026-10-19, describes training plans built by coaches and personalized with AI. You tap the equipment you have (dumbbells, barbell, bands or bodyweight only) and the workout rebuilds, and it tracks weight, reps and personal bests.

The SHRED pricing page lists a free plan with a limited workout library, basic tracking, no personalized programming and no AI progression, plus paid monthly and annual plans, and a 7-day free trial on the annual plan. It suits a woman who likes following a structured plan and logging numbers. The limits are that the personalized features sit behind the paid plans, no study I cited tests SHRED or any other app, and the user numbers and testimonials on its site come from SHRED. You can check the plans yourself at SHRED, which is an affiliate link for this site.

Talk to Your Clinician Before You Start

This is general information, not medical advice. Mayo Clinic says to talk with your healthcare professional before beginning a strength training or aerobic program if you have a chronic condition or safety concerns. Ask first if you have osteoporosis or low bone density, heart disease, joint problems, pain that doesn’t go away, or you take a medication that could change how you exercise. Questions about how lifting fits with a prescription weight loss medication belong with your prescriber.

Frequently Asked Questions

How many days a week should a woman over 40 lift weights?

The CDC says at least 2 days a week for all major muscle groups. Mayo Clinic says to rest one full day between working the same muscle group, and the American College of Sports Medicine suggests 2 to 3 days a week for beginners.

What weight should a woman over 40 start with?

Mayo Clinic suggests a weight heavy enough to tire your muscles after about 12 to 15 repetitions, and the guidelines say to work to the point where another repetition would be difficult. Choose a load that lets you keep good form, and raise it gradually when you can easily do more repetitions.

Is strength training or cardio better for menopause weight loss?

Neither one wins alone in the research I read. In the 2023 meta-analysis of postmenopausal women, subgroup analyses found resistance and combined training did more for muscle mass, while aerobic and combined training did more for fat mass, and combining them may be viable. That study measured body composition, not scale weight. The guidelines recommend both kinds of activity for adults.

Is strength training safe with osteoporosis?

That is a question for your clinician. The LIFTMOR trial found its supervised lifting program improved bone density in postmenopausal women with low bone mass, but those women were screened, supervised and averaged 65 years old. Don’t copy that program on your own.

How long should a strength training session last?

Mayo Clinic says you may notice stronger muscles with strength training at least two times a week for only about 20 to 30 minutes each time. You don’t need to spend hours lifting.

How soon will I notice results?

Mayo Clinic gives no number of weeks. It says that if you stick with strength training you can keep increasing your strength no matter where you started. The guidelines say improvements are progressive over time, so judge it by what you can lift and do, not by the scale.

Sources

Strength Training for Women Over 40: What the Guidelines Say