First off, my goals are to put on mass. I dont think my question requires me to put my work out routine, diet etc.. Any way, my question is, if i wanted to lift, say two or three days in a row, is there a problem with that. I obviously wouldnt be hitting the same muscle group more than once in those three days. And then if i worked out say bicep/chest on monday and i was still sore would it be ok to work out back/shoulders?