Train with your body, not against it.

For most of its history, the women's fitness industry ran on a single, lazy idea: shrink yourself with cardio and restriction, and treat your hormones as a problem to be apologised for. It sold step classes and 1kg dumbbells while quietly ignoring the two things that actually change how a woman trains — the monthly rhythm of her cycle, and the slower, larger shift through perimenopause and menopause. Hormonal literacy was never on the syllabus. The result is that millions of UK women have spent years confused about why a session that felt easy one week feels brutal the next, or why the body they could once diet into shape stops responding in their forties.

None of this is mysterious once you understand what oestrogen and progesterone are doing. You don't need to "biohack" your cycle or buy a menopause supplement range. You need to know roughly where you are in the month, what's changing as you age, and how to adjust load and volume accordingly — while keeping the one constant that matters most: lifting weights.

What your hormones actually do across the month

Oestrogen and progesterone rise and fall in a predictable 28-day pattern, and that pattern — not willpower — explains most of the week-to-week swings in your energy, strength and recovery. Oestrogen climbs through the first half of the cycle and supports muscle building, recovery and pain tolerance. Progesterone dominates the second half, raising your core temperature slightly and, for many women, bringing fatigue, water retention and lower motivation.

The follicular phase is your build window

From the first day of your period to ovulation (roughly day 14), rising oestrogen improves recovery and, for many women, makes heavier training feel more achievable. This is the half of the month to chase progress — add weight, attempt a rep PR, programme your hardest sessions. If you only have the energy to push hard for two weeks, make them these ones.

The luteal phase asks for consistency, not intensity

After ovulation, progesterone rises and your resting temperature climbs by around half a degree. Fatigue, disrupted sleep and stronger appetite are common. The mistake is to read this as failure and quit; the fix is to keep training but pull back volume — fewer sets, slightly lighter, more rest between sessions. Consistency through the luteal phase beats heroics followed by a week off.

How to train in each phase

You do not need to redesign your programme around your cycle, but matching effort to your phase turns an unpredictable month into a plan you can actually follow. Use the cycle as a guide rail, not a rulebook — and track it for two or three months so you're working from your own pattern rather than an average.

If you take one thing from this page: push in the follicular phase, hold steady in the luteal phase, and never use a "bad week" as a reason to stop entirely — the women who progress are the ones who keep training lighter, not the ones who quit and restart.

Exercise, PMS and your period

Regular exercise is one of the few self-care measures the NHS explicitly lists for easing PMS symptoms — and there is no phase of the cycle in which training is unsafe for a healthy woman. Movement in the days before your period supports mood and sleep, and many women find it reduces bloating and cramp severity.

What to do in the worst few days

If the first day or two of your period flattens you, shorten the session and drop the load rather than skipping the gym. A 25-minute walk, a swim, or two or three lighter lifts keeps the habit alive and tends to leave you feeling better than the sofa would. The NHS guidance on PMS places regular exercise alongside sleep and balanced eating as a first-line measure.

Why "rest the whole week" is bad advice

Stopping entirely for a week each month means you spend a quarter of the year detraining. Reduced volume is recovery; complete shutdown is regression. Keep the floor — one or two easy sessions — even in your hardest week.

Perimenopause and menopause: why strength becomes non-negotiable

As oestrogen declines through perimenopause, women can lose up to 10% of their bone density in the first five years after menopause, and muscle loss accelerates — making resistance training a medical priority, not a lifestyle choice. Oestrogen helps maintain bone mineral density; when it falls, bones lose protection and fracture risk rises in later life.

Strength training is the evidence-based defence

Progressive loading is the most effective non-drug way to protect bone and muscle through this transition. The NHS menopause guidance recommends regular weight-bearing and muscle-strengthening exercise, and the Royal Osteoporosis Society specifically recommends resistance and impact exercise to maintain bone strength. Two to three sessions a week at the weights section of a PureGym or Anytime Fitness does more for a woman over 45 than any amount of additional cardio.

Cardiovascular health changes too

Cardiovascular risk rises after menopause as oestrogen's protective effect fades, so strength work should sit alongside — not replace — regular brisk activity. The goal in your forties and fifties is a body that stays strong and independent into your seventies, and that is built in the weights room.

Eating for your changing hormones

Falling oestrogen makes muscle harder to hold onto, so protein matters more with age — roughly 1.6–2.2g per kilogram of body weight a day for women who strength-train. This isn't a "menopause diet"; it's the same evidence-led eating that works at any age, with protein nudged up and distributed across meals.

Build it from normal UK food

You do not need a supplement range. Greek yoghurt, eggs, chicken thigh, tinned tuna and cottage cheese from Tesco, Aldi or Lidl will get most women to target for a few pounds a day. See the Fat Loss & Nutrition pillar for exact macro targets by body weight.

Manage luteal-phase appetite

Hunger genuinely rises in the luteal phase. Plan for it with higher-protein, higher-fibre meals rather than treating the extra appetite as a lack of discipline — it's hormonal, and it passes.