i wouldnt all injectables cause some sort of swelling it would show up like hell on your chest , and what if someone got and infection id hate to see an infected chest, just what i think bro
Like any virgin site it will hurt very much the first few times you do it. But I wouldn't do it again myself, Just too much pain for too long. There are so many other places to rotate to that are way more tolerable. But i always try it at least once to see what it's like.=)