when you say half the dose in each side of the muscle what exactly do you mean...
say i was doing delt shots, do half the dose in my anterior and the other half in my postier delt? are you suggestion to spot inject to get site specific growth? say i choose bi's, tri's, and delts (or maybe traps)... does this mean i shoot into both left and right muscles in the same day?
i'm confused as to the pinning routine you are suggesting raybravo