Penile Enlargement: Pennis Enlargment - Version - Penile enlargement exercises are natural techniques used by millions of men worldwide to gradually but permanently increase the length and/or the girth of their penile. It's said to work by stimulating the growth of new cells in your penile, particularly in the corpora cavernous. When new cells are created and added to it, it increases the length and the girth of your penile.