Hot flushes, mood swings, weight gain, sleep loss… the perimenopausal years come with their fair share of exercise obstacles. Caused by a natural decline in oestrogen, the menopause is officially when periods have ceased for 12 consecutive months, but the bit that comes before it – the perimenopause – can last for months to years, beginning as early as your 30s. And the havoc it wreaks on the body
