Flip I see what you are saying, but your theory is flawed. You are assuming that winny and all other water based AS will cause site growth more than just minimal tissue stretching, which I do not think is true. This is not Synthol we are dealing with, its a liquid looking to bind to the androgen receptor, not fill up the muscle like synthol. There are many factors here, including the concentration of AR's within this given area, which is different for everybody. IMO site injections with water based AS will cause initial swelling and tissue stretching whether injected before or after the workout. However, injecting before will allow quicker dispersion of the gear throughout the muscle, creating better pumps, and less pain the next day.