Ligs get stretched on straight down angles, while tunica strethces are mostly you pulling up or
hanging weights pulling up
http://www.peyronies-disease-help.com/wp-content/uploads/Penis-anatomy-detail.jpg
Here is a link to anatomy of penis my friend study it then look on this forum, What lot theory is, Tonight i Just figured my lot out with a simple instruction on another forum. The Lot theory will help you determine where you can attain faster gains in the penis either in your tunica or in your ligaments