Originally Posted by onizzy
From what I read around the forums people seem to think jelqing makes you grow by expanding the penis or stimulating new cell growth. All the comments in this thread seem to support the theory of growing by expanding or stretching out your penis, not gowning new cells to make it larger.
The stretching of the cells caused by jelqing may cause plastic deformation initially, but over time (and with consistent regular expansion) the penis must create new cells; there simply would not be enough tissue to allow girth gains of more than a small amount only from plastic deformation.
My theory is that gains from plastic deformation will be mostly lost if you take an extended break from PE, but if you have gained more than a certain amount of girth by consistent PE, you have created new cells and permanent growth.
There will still be a certain amount of plastic deformation at whatever size you reach, which will disappear after an extended break, so if you want, say, a final girth of 5.5”, you would have to get your girth to 5.7” or so for a while so that when the plastic deformation has gone, the final girth remains at 5.5”.