This may be a noob question but here we go...
I've just started on whey protein shakes to get my muscle back after a period of illness last year and a break from lifting. I got to seeing some improvements on definition before I had to stop.
Started again two weeks ago and seem to have some size improvements already but my question is if I stop the shakes and can't get the protein via dietary means will I loose the muscle or so long as I keep lifting i'll maintain it?
i'm doing the 5x5 program on compound lifts.