One of the unfair aspects of ageing is your muscles tend to turn to noodles. Plus, the hormone changes waiting for you in perimenopause and menopause will encourage your body to pack on kilos. That's why strength training is so crucial for women over 40. You can minimise or even banish the downsides of ageing with a regular weight lifting/toning routine. Do 3 sets of these 8 arm moves every other day for the best results.