What are your thoughts on compound exercises vs isolation exercises when on a size/mass routine? I know members have said that gear can equal more volume but spending 2-3 hours in the gym is overtraining even on gear. I am thinking about doing one or two compound exerercies and maybe one isolaiton exercises per muscle group. I am not sure about the benefits of dumbell flies, side raises, front raises, leg ext, leg curls, etc. when trying to add size/mass.