The upward stretch in the [words=http://www.mattersofsize.com/forum/penis-enlargement-newbie-forum/1597-dlds-first-routine-i-gained-2-inches-with-this-routine-full-tutorial.html]newbie routine[/words] (which I assume is the same as Phase One) hits the tunica fairly well. Using the upward stretch allows you to kind of "bypass" the suspensory ligaments so the tunica gets the brunt of the stress.