I know i'm prone to let my shoudlers rotate forward, what I got the most out of that one was trying to keep the shoulder blades back, and rolling the shoulders back rather than letting than round forward.
"And for crying out loud. Don't go into the pain cave. I can't stress this enough. Your Totem Animal won't be in there to help you. You'll be on your own. The Pain Cave is for cowards.
Pain is your companion, don't go hide from it."