i don't get if your trying to be sarcastic or not lol.
i have no idea, he has little to no fat on him, and he put on 15 lbs... so whatever that weight was, it's still weight that he didn't have before!
i just mentioned it because he seems to have the same body type as my bf, and if he wants to get stronger and put on weight, puts the effort in, he'll see results...