Perimenopause and strength training:
what nobody tells you.

What perimenopause actually does to your body

Perimenopause is the transition period leading up to menopause, typically beginning in the early to mid-forties, though it can start earlier. During this phase, oestrogen and progesterone levels fluctuate and gradually decline. This hormonal shift affects virtually every system in your body, and the effects are often confusing because they arrive gradually and do not always announce themselves clearly.

Common experiences include disrupted sleep, increased fatigue, changes in body composition where weight seems to accumulate around the middle regardless of what you eat, joint aches, brain fog, mood changes, and reduced recovery from physical activity. Many women are told these are normal parts of ageing and that there is not much to be done. That is not accurate. There is a great deal to be done, and a significant portion of it involves how you train.

Why oestrogen matters for exercise and recovery

Oestrogen is not just a reproductive hormone. It plays a significant role in muscle protein synthesis, bone density maintenance, joint lubrication, glucose metabolism, and the regulation of cortisol, the primary stress hormone. When oestrogen levels decline and fluctuate during perimenopause, all of these systems are affected.

Recovery from training takes longer. Joint sensitivity increases. The hormonal environment that made it relatively easy to build and maintain muscle in your thirties shifts, meaning you need to work with your body differently rather than harder. This is where many women go wrong during perimenopause. They notice their body is not responding the way it used to and respond by doing more cardio or cutting more calories. Both of these strategies tend to make things worse.

Why more cardio is not the answer

High volumes of cardio training without adequate strength work and nutrition can accelerate muscle loss during perimenopause. Cardio elevates cortisol, which in a hormonal environment already characterised by disrupted stress hormone regulation, can contribute to the very fatigue, sleep disruption, and body composition changes you are trying to address.

Walking is different. Regular daily walking has genuine benefits for cortisol regulation, joint mobility, mood, and metabolic health, and is worth prioritising. The problem is specifically high-intensity cardio training done in high volumes without the counterbalance of structured strength work and adequate rest.

What strength training does during perimenopause

The research here is consistent and fairly compelling. Regular progressive resistance training during perimenopause and post-menopause has been shown to maintain and build muscle mass, improve bone density, reduce the risk of osteoporosis, improve insulin sensitivity, reduce the severity of some menopausal symptoms including sleep disruption and mood changes, and improve body composition in ways that cardio alone does not.

Muscle is metabolically active tissue. More muscle means a higher resting metabolic rate, better blood sugar regulation, and greater physical capability. Bone density, which declines significantly post-menopause due to the loss of oestrogen-driven protection, responds to the mechanical stress of resistance training in a way that no other form of exercise replicates as effectively.

Joint health also improves with structured strength training, which runs counter to what many people expect. Stronger muscles around a joint mean less load on the joint itself, less pain, and better long-term function.

How to train during perimenopause

The principles are similar to strength training at any life stage, with some specific considerations. Recovery matters more than it used to. Two or three sessions per week with adequate rest between them is generally more effective than trying to train every day. Session intensity needs to be managed relative to how you are sleeping and how your energy levels are, which can be significantly more variable during perimenopause than at other life stages.

Protein intake becomes more important. The efficiency with which your body uses dietary protein to build and repair muscle declines with age and is further affected by hormonal changes. Most women over 35 are not eating enough protein to support the muscle maintenance their body needs, particularly during perimenopause.

Compound movements that work large muscle groups, squats, hinges, rows, presses, remain the most effective use of training time. These build the functional strength that has the most impact on how you feel and move day to day.

The thing most people get wrong

Perimenopause is often experienced as a loss of control. Your body is doing things that feel unfamiliar and unpredictable, and the usual tools seem to have stopped working. The temptation is to try harder, restrict more, and push through. The evidence consistently points in the opposite direction. The bodies of women in perimenopause need more recovery, more protein, more structured movement, and considerably less of the high-intensity, high-volume, low-calorie approach that the fitness industry has long promoted to women.

Working with a coach who understands this stage of life, who can adapt sessions around how you are feeling on a given day, and who programmes with recovery as a built-in priority rather than an afterthought, makes an enormous difference to outcomes. This is a significant part of why Motus focuses specifically on adults over 35.