Sub-q also works but there is more of a possibility of growing your intestines... Go see the "What's up with these huge gut..." thread in the "general chat" section for what I mean. I personnally would NEVER inject close to the intestines for that very reason even though one might say that abdominal sub-q is further away from your intestines than it looks. Unless you need big abs, this is not the best way to do it. If you want to do sub-q, I'd go for an arm or lower leg shot. Opinions will vary widely on this subject as it is without ANY real scientific research.
I have used my last ever shot of MR long R3 IGF-1 in my shoulder at the "acromion" tip, and to my surprise it felt much better. A lot of lifters get pain there so yes I would say it does work to strengthen ligaments/cartilages/attachments. Again, no solid research, but that is what I have felt.
I think IM is good for PCT also... And I think one shot each side is good enough. Personally I would do the calves on off days if nothing else is lagging. It will give you some systemic effects and some local effects... Most people have trouble growing their calves. Simply rotate the target sites/bodyparts between off days.
