If you walk regularly, you are already doing something genuinely valuable. Walking supports cardiovascular health, helps manage stress, improves blood sugar control, and is one of the most sustainable movement habits an adult can build. It is accessible, low-cost, and consistently associated with better health outcomes.
But here is the thing, many active, health-conscious adults do not realise: walking and strength training are not doing the same job. And if walking is the only physical activity in your week, there is likely a gap, one that becomes more significant the older you get.
This is not an argument against walking. It is an argument for adding something walking cannot do on its own.
The assumption worth questioning
Many adults in midlife feel they are staying on top of their health. They walk regularly, maybe cycle occasionally, stay reasonably active. They are not sedentary. They are doing something.
And yet they also notice, gradually, then more clearly, that they feel less strong than they used to. Stiffer. Less steady. Aches and pains. They get more easily depleted by demanding weeks. Their body feels less like a reliable resource and more like something they are quietly compensating for.
Walking did not cause that. But walking alone is not preventing it either.
Current physical activity guidelines make this distinction clearly. Adults are advised to accumulate regular aerobic activity and to include muscle-strengthening work involving major muscle groups on at least two days per week, not as a bonus, but as a separate and necessary component of long-term health (WHO; Bull et al., 2020). These are not interchangeable. They serve different biological purposes.
What walking does well and where it reaches its limits
Walking is genuinely good for the body. It supports heart and lung function, circulation, mood, and general movement volume across the week. For anyone who is deconditioned, stressed, or returning to activity after a gap, it is often the most realistic and sensible place to start.
It is also weight-bearing, which matters. In perimenopause and beyond, consistent walking can contribute to health maintenance and has shown some positive effect on bone mineral density when sustained over time (Ma et al., 2013).
The problem is not what walking does. It is what walking cannot do, no matter how consistently you do it.
Walking does not provide meaningful progressive overload. The body adapts to familiar movement quickly; that is actually a sign of efficiency, but it also means the stimulus may become too low to preserve or build muscle and strength. Unless you are significantly changing pace, gradient, terrain, or adding load, the physical challenge of a regular walk tends to plateau.
Walking also leaves the upper body, trunk, and posterior chain largely undertrained. It does not develop the capacity to push, pull, carry, brace, or produce the stronger contractions that keep muscle and connective tissue robust. It is movement. It is not a complete physical strategy.
Why the gap matters more after 40
From midlife onward, the cost of under-training strength begins to rise in ways that are easy to miss until they are hard to ignore.
Muscle mass and force production decline gradually with age if they are not challenged — slowly enough to feel normal, cumulatively enough to change how the body functions (Fragala et al., 2019). What shows up first is not usually dramatic. It is the stiffness that takes longer to clear in the morning. The extra effort ordinary physical tasks require. The sense of being less steady, less solid, less able to absorb demand without feeling it afterwards.
Resistance training is one of the clearest, most evidence-supported ways to counter this. A comprehensive position statement from the National Strength and Conditioning Association concluded there is strong evidence that resistance training can mitigate age-related declines in neuromuscular function and physical capacity (Fragala et al., 2019). The body, given a sufficient reason to adapt, does adapt — at any age.
The practical implication is straightforward: if you want to stay capable, your body needs a stimulus that actually asks it to keep capability.
For women in midlife, the stakes are higher still
For women moving through perimenopause and menopause, this conversation carries additional weight.
The hormonal shifts of this period — particularly declining oestrogen — can accelerate losses in muscle mass, bone density, and recovery capacity. That is not an inevitable decline. It is a physiological context that makes deliberate strength training more important, not less. At exactly the point when many women step back from structured exercise, the evidence suggests they benefit most from stepping toward it.
Research in postmenopausal women consistently shows that resistance training improves lean body mass, functional capacity, and menopause-related symptoms (Thomas et al., 2021; Sá et al., 2023). Studies on bone health in this population show that training with greater mechanical loading is effective in preserving bone mineral density, whereas walking alone does not replicate these effects (Mohebbi et al., 2023; Ma et al., 2013).
Dr Stacy Sims has been one of the most influential voices making this case clearly. Her work pushes back directly against the default advice many women receive — do more cardio, eat less, stay active — and argues instead for purposeful strength training, adequate protein, and approaches that reflect the actual physiology of women in this life stage (Sims & Yeager, 2022; Sims website). Whether or not someone follows her specific protocols, the broader point is well-supported: for midlife women, strength is not an optional extra. It is one of the most evidence-grounded investments available.
What resistance and load actually looks like
This is where many people get stuck, because “strength training” still conjures images of gyms, barbells, and long sessions that do not fit real life.
It does not have to look like that.
Resistance and load can come from bodyweight movements progressed sensibly, resistance bands, dumbbells or kettlebells, machines, loaded carries, or, for people who are time-poor or want a clinically grounded option, more recent additions like EMS training, which creates meaningful muscular stimulus in significantly less time than conventional training. The modality is less important than the principle: the body needs tension, effort, and enough progression to keep adapting.
For most adults, two or three shorter sessions per week is enough to change the picture materially. The goal is not to replace walking or to train like an athlete. It is simply to stop asking walking to do a job it was never designed to do alone.
Walking plus load: the more complete model
The right model is not walking versus strength training. It is walking plus strength training.
Walking looks after your cardiovascular system, your movement habits, and your general activity levels. Resistance training looks after your muscle, your bone, your force production, and your physical robustness. Together, they cover the ground the body actually needs to cover in midlife and beyond. Separately, each leaves something important unaddressed.
That combination is also more achievable than most people assume when they first think about it. You do not need to overhaul your life or your schedule. You need to add enough load, often enough, to give the body a reason to stay strong.
The question worth asking
If you already walk regularly, keep doing it. It is genuinely valuable and worth protecting as a habit.
But if strength, muscle, and staying physically capable over the long term matter to you, ask yourself one more question: where is the load in your week?
If the honest answer is nowhere, or not really, that is most likely the missing piece.
Walking is a strong foundation. It is not the whole structure. The body needs movement, yes, but it also needs resistance, tension, and enough challenge to hold on to the muscle and physical capacity that make life easier in the years ahead.
Further reading about strength and physical capacity
Why Strength Matters More in Midlife Than Most People Realise
Back to Main Guide
Strength, Muscle and Physical Capacity
References
Bull FC, Al-Ansari SS, Biddle S, et al. World Health Organization 2020 guidelines on physical activity and sedentary behaviour. Br J Sports Med. 2020;54(24):1451–1462.
Fragala MS, Cadore EL, Dorgo S, et al. Resistance training for older adults: position statement from the National Strength and Conditioning Association. J Strength Cond Res. 2019;33(8):2019–2052.
Ma D, Wu L, He Z. Effects of walking on the preservation of bone mineral density in perimenopausal and postmenopausal women: a systematic review and meta-analysis. Menopause. 2013;20(11):1216–1226.
Mohebbi R, et al. Exercise training and bone mineral density in postmenopausal women: a systematic review and meta-analysis of intervention studies. Front Physiol. 2023;14:1094890.
Sá KMM, de Araujo CAO, de Oliveira LP, et al. Resistance training for postmenopausal women: a systematic review. Menopause. 2023;30(1):79–92.
Sims S, Yeager S. Next Level: Your Guide to Kicking Ass, Feeling Great, and Crushing Goals Through Menopause and Beyond. Rodale Books; 2022.
Sims S. Official website. Guidance and education on training, strength, and longevity for women through midlife and beyond. Available at: https://www.drstacysims.com/
Thomas E, Battaglia G, Patti A, et al. The effect of resistance training programs on lean body mass, strength, and physical performance in postmenopausal and elderly women: a systematic review. Int J Environ Res Public Health. 2021;18(21):11274.
World Health Organization. Physical activity. Available at: https://www.who.int/initiatives/behealthy/physical-activity