After taking a long hiatus from lifting and being ill for 6 months I've decided to get back into lifting. To my suprise some muscles haven't atrophied much, if it all, while others have significantly. Pecs, lower back, and stomach stayed in relatively good shape, upper back and legs went to shit. Anywho, I've started up again and I've decided I'm going to get back into lifting like I was before my hiatus. I've been doing chin/pull-ups (primarily the ones where my palms are facing away from me) to hit my upper back rather heavily and have so far, despite using creatine, glutamine, and taking whey protein haven't made any gains in about 3 weeks. 0. Can still do the same amount of unassisted chins/pulls as I could despite improvement in other areas like benching, squating, etc. I also am feeling the muscles in my upper back contract so I'm pretty sure I'm doing the exercises correctly. It occurs to me that even when I could clean the most I ever could in high school, which was 190, I still couldn't do very many chins/pull-ups. Any ideas?