I see where your at with the HGH/Collagen and the pumping thought but because you are young, your breasts are the last place it'll go. Since your still going through puberty your body is more focused on lateral growth, regulating your cycle and eating habits et cetera, providing energy to your other cells first that help with homeostasis and then your fat cells in the breasts, but the amount sent is regulated by hormone production from the hypothalmus or pituary gland.
However the increased blood flow into the breasts when you pump will carry nutrients for your breasts to grow bigger in size so that will help. I just said this in another thread but honestly, the best programs on here with women who achieved the best results didn't use the NB from what I've read.
However the increased blood flow into the breasts when you pump will carry nutrients for your breasts to grow bigger in size so that will help. I just said this in another thread but honestly, the best programs on here with women who achieved the best results didn't use the NB from what I've read.