^^ Agreed. I learned my lesson a few years back with my shoulder. In my opinion, one of the worst things to injure. Every exercise you do will incorporate them, even if it's the slightest movements.
Taking time off is a bitch, especially if you're a hard gainer and cant hold the weight on.
I learned to lift responsible and know my limits. I know when to take a day off or move up/down in weight.
Trail and error bro!
Just keep an eye on those injuries. Can be a major pain in the ass.
I HATE losing muscle weight! hahaha