What the hell is muscle juice? If you arent getting bigger there are 2 problems:
You arent eating enough.
Your training sucks.
Forget diet and nutrition books. Forget the milk. Go buy a book on Exercsie Metabolism, read and understand every page in it. Once that has happened, try harder.
I went from 145 at the end of the wrestling my senior year in high school to 195 when I walked on at BG for football. The magic words are, “peanut butter.”