Grape juice and protein just following a workout.
I use 1 teaspoon every day after my workout in my protein shake.
I am dieting so I just use water.
Crack your back?
................That is funny.
If you mean a chiropractor adjustment, it is not a bad idea to get adjusted but the way he is explaining it, he is wrong
Rip the muscles?
Wrong too.
Overtraining will result in loss not gain.
There is something to the adjustments and firing of the muscles but it is a good idea if you are out of alignment.
But doing it for the sake of doing it is pointless and costly.