its not possible to gain or make new veins or is it simply that really small ones get bigger. i realize that your veins will become more visible but, i am noticing new really really small ones that i can't imagine coming from some smaller veins cause the new ones are really small already. does anybody the the anatomic explanation for this, can veins branch off of other veins, can new veins for from tiny vessels, or is it only that smaller ones become bigger