When purchasing separates for a workout wardrobe, be sure to stock up. Though they may live in your gym bag for days at a time, it's generally not a good idea to wear the same clothing for several days in a row. Most of the time, you sweat in your workout clothes, making them wet and....well....smelly!
Change it up daily. Be careful not to let workout gear hang out in your gym bag, it will only get stinkier and cause everything else in the bag to smell like a sweaty workout!