I've recently become very interested in exercising (roller blading, bicycling, brisk walking) I know that it is good to take some kind of protein shake after the work out. I am trying to lose some weight (15-20 lbs) then become more toned. Does anybody have any suggestions on what GNC brand shakes I can use to first help me lose weight then maybe another kind to help me become toned? Any help is appreciated for I've never done anything like this before! Thank you!!