I know we've got an article on PR prep, and it's a great read. I'm curious as to everyone's prep right before the PR when you're already at the gym. I'm interested because I did a PR attempt (bench) and failed miserably a few weeks ago. Today, I took a different approach and it was cake. I know a lot of this has to do with what you've eaten/sleep/time of day ect...but I'm convinced it was because of my warm-up in the gym. Probably more psychological than anything else, but still.
What is your PR in gym prep (e.g. warm up)? Let's use Bench as an example, but feel free to post up others.