Currently I'm working out each muscle group once a week. I try to hit each muscle group pretty hard with a total of about 9 sets per muscle group. Last time I weight trained was Wednesday, for chest and triceps, and today I'm still feeling it a lot. Today I'm doing shoulders and legs... should I be working each muscle group more than once? I know the 48 hours thing, but I'm feeling that with the number of sets I do per muscle group, 48hours might not be enough, as I'm still feeling it after 48. Please give me some imput! thanks, 