back aways guys used to say you want to take your shots as far away from your heart as possible. i tried shooting in the chest once- it really hurts, cant think of anything positive to come out of it. that whole site injection bullshit craze has come and gone- it doesnt work. if you want an area to grow- isolate it. this always works.as an example- my chest has always lagged behind. when i had no weights and could only do pushups for a long while, it became a strong point, this is your proof. this is why top guys train everything , from every angle- because it works. if youve ever switched to a job with lots of physical labor, your body will take on a new look within a few weeks, because your lifting/moving in everyway. kinda besides the point but now im thinking. also if your gonna go anywhere with a needle, fill it with at least 2 cc. why damage your muscle/nerves with a poke for 1/2cc?