well i was doing this bulking diet for the past 5 months.. went from 150 to 175 however, the stomach got fatter and alot flabbier, is this a sign of a bad diet or what, i mean i did gain muscle.. so how do you gain just the muscle without the fat?.. on a side note, i see some body builders that have a big stomach but, its not flabby its pretty firm and not soft, is this cuz their abs are built up well?