This answer will most probably surprise you- you are most likely washing your bottomwear way more often than you need to. Frequency of cleaning needed depends on the kind of fabric in question. Denim need to be washed once a month and not more, whereas you should be washing your cotton bottomwear every three-four wears. Depending on how much you sweat, when it comes to gym wear for women, ultimately the call is yours. Follow the wash care instructions carefully to ensure great longevity of all your clothes.