i agree with marcus300 except on the time scale thing, but it can still be applied to my thing. now i do only one group at a time, but i go into the gym with the intention to completely wreck that muscle group. if i don't get sore then I've failed. I know two guys that are big as fvck and trim to boot and they go in with this mindset as well. i just heard one of them does legs 2 days in a row if he doesn't feel accomplished after the first day.