i think you're going to have to describe your situation a little more. are you very thin right now? are you overweight? it seems to depend on the person, but it's not necessarily the case that you're going to be eating more calories. remember to eat slowly and pay attention to your level of satiation. there may be a period of adjustment when you'll have to pay close attention to how full you feel. also, you might gain weight if you were previously protein deficient, just from your body using the now-available (or more easily assimilated) protein to repair muscle. it's more useful to pay attention to your BF% (you can eyeball this by monitoring the fat that's on your body) than weight, because weight can be deceiving. there are some very lean individuals on these boards, and if that's your goal, seek them out and figure out what works for them (as it may work for you).