there was a study where, given the same weight lifting program, a couple people gained tons of muscle, most gained some, some gained none, and a few even lost m

there was a study where, given the same weight lifting program, a couple people gained tons of muscle, most gained some, some gained none, and a few even lost muscle. Not everyone can gain appreciable muscle This is a non sequitur. A reasonable follow-up study would try to figure out why those people didn't gain muscle, and how that can be changed (the first things to look at would be diet and sleep. If they're not getting enough food, of course they will lose muscle).