I am currently lifting a lot of weight and hardly doing any cardio. (Lift weights e.g. Firm, Cathe about 4 times a week and do Cardio once a week, if that). Just got some Spinning Videos to use at home on my Elliptical trainer in an attempt to do more cardio and these, of course, work your legs at varying tensions - if I were to focus on cardio say 4 days a week and then weights 2 days a week, would I lose muscle tone in my legs? I do not want this to happen after my hard work. I want to lose a little bit of weight from my lower half but don't want to sacrifice muscle tone - hope this silly question makes sense !