stretching

So ive always been bad about not warming up before heavy lifting.. so therefore, depending on my activity level throughout the day, my lifts can vary significantly In weight. So I'm going to start warming up more thorough. How do these sound? Squat/dead warmup (based on current working sets...

Ive been hitting chest pretty hard and I have good definition/depth but I think I may missing something when it comes to developing any substantial width in the upper chest. Just wondering if someone could lend me a hand on some different things to do to get upper body a little wider, besides...