One has to wonder, while clearly so fit she could, but the question is, would she want boobs so huge as to rival Beshine? Apparently, Foxy may, and Martina insists she will, but it is all a matter of priorities. If increasing the size of your boobs increases your happiness, it certainly would be rational to go for very large expanders because every girl with them loves to keep getting bigger, but the bottom line is that, as your boobs get bigger, activity adjustments have to be made, and you have to embrace those as well. If you really love how the size your boobs interferes with so many things, clearly your happiness only increases.