My workout partner swears that site injections make the muscle that is injected grow. I tend to disagree. I feel you do have swelling in that area and it may look bigger for a day or two. I have argued this topic for a while with him. My reasoning is when you are in pain the doc doesnt inject you with the pain med where you have the injury. Or when you have to get a Tetanus shot (for example stepping on a nail) you dont get injected in the foot. What is your opinion on site injections?