OK, I don't buy any of it.
Where is it written that aqueous HCG solutions are fragile or unstable? The product insert sheet that comes with mine does say anything about shock sensitivity. When I used to work with the pure stuff from Sigma, they never implied it was an unstable protein. Anybody have a reference?
I bet if you could calculate the hydrodynamic force required to squirt the HCG solution through a narrow bore needle into your subcutaneous fat/muscle it would easily exceed anything you could approach by massaging your skin.
So bass, bro, here's my theory, you are injecting what? a 1/4 cc? When you vigorously massage the area you are squeezing out the solution but it's so little, you can't see/feel it.