I resumed lifting last fall after after a long break of maybe a dozen years where I was mainly interested in running. I gained too much fat from running, so I decided to do lifting and it's great, but I have ZERO sleeved shirts that fit. Yesterday I decided to pick up a shirt because I have jury duty and I tried on an XXL and it was too tight on the arms and shoulders, I'll admit that I have too much fat on me but when I had that 360 degree mirror in the changing room I could tell I was starting to develop that "gorilla back" that real lifters get. This has been the only time working out where I have put actual effort into back exercises since I hate them. But I got to see my back and thought, damn, that's pretty cool!