I'm thinking of changning my routine...I've been doing alot more volume than usual. When I was fairly new to lifting I made my best gains using push/pull/leg routines. I was doing only big exercies, very little isolation stuff. I still do primarily big exercises, and am now up to a 4 day split. My lifts have been making tremendous gains, best in my life, but I think I am burning myself out. My shoulders and lower back seem to be taking a beating. I am thinking of going back to a more "hardgainer" type routine. A two or three day split, and cutting back on numbers of sets. Part of me thinks if it ain't broke, don't fix it, especially since I am making good strength gains. Another thought is to keep my current split, and increase to the 6-8 rep range(I've been going 3-4 on my heavy sets). I would appreciate some thoughts. You can learn everything you want to know about my workouts in my journal. Thanks everyone.