Igf 1

[theroot54]

I saw a special on this the other day, and was curious if anyone on the board ever used it or had any knowledge on it. If so, do you have to unject it in each muscle, or in one and it gets to the all. On the special it made it seem that only the muscle that is injected by it would grow faster and get stronger faster. If anyone knows any knowledge on it let me know. Thanks