If you have read my explanation of what the meridians are, maybe you have already guessed. Basic question, if you inject it into a meridian, where do you think it will go? If you inject it in the face, it will follow the meridian down towards the heart. And it will diffuse into surrounding tissues as it goes. Look where the Stomach and Large Intestine channels go. Need I say more? And remember, the meridians are pretty wide as far as the circulation of extra-cellular fluid goes. I am actually surprised they don’t ave more problems than they do. Maybe it is because the flow would tend to be stronger the closer you get to the center of the meridian. Anyway, that is my explanation. Makes sense doesn’t it?