Expert reviewed by Esther Quaye, MSc Nutrition, RNutr · June 2026
Muscle mass declines gradually from the mid-thirties, and the rate accelerates through the menopause transition. Less muscle means a lower resting metabolic rate and a different shape at the same weight.
The two levers with the best evidence
- Resistance training two to three times a week, loaded properly
- Protein at a level most women are not currently reaching
Both also protect bone density, which matters more in this decade than in any previous one. Cardio is good for you; it is not the lever for this particular change.
Sources
- Physical activity guidelines for adults — WHO
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