Hey guys -
I'm currently on a 3 day a week routine (Mon - Back & Bi's, Wed - Chest & Tri's, Fri - Leg's & Shoulders). I don't do cardio on workout days, but have started doing 30 minutes of cardio on "off" days. So my question is, if I were to do just one single exercise on those off days, what would give me the most bang for my buck. Or, is it better to just leave the days alone with just cardio?
Thanks for the advice!