>>81964340>so i was hoping to gain some weight (in the form of muscle in precise locations that will make up for my physical shortcomings) while still being relatively thinYour body will just look ridiculous if you have highly developed delts with skinny arms. Might as well at least work the entire upper body, but skip traps because they will make you look narrower. I'm not sure about the hunchback, but I had the nerd neck thing and I fixed it by doing chin tucks and sleeping on my back. Obviously, you will need to gain a significant amount of weight in terms of fat to gain the muscle mass in the first place because you need a caloric surplus and a high amount of protein.