Almost every injection is painful for me (after a day or so), and i am not squeemish or a pussy. I am shooting T400 in my glutes and i tried my quad...ONCE. Although i now have to try somewhere else because my grlfriend is starting to ask about the lumps, ahem 'muscle' on my ass! My next site is gonna be my delts, i hope that i can still move them when i am done!