Pre-Stretching Tunica to allow more Girth Expansion
The case for doing Length work right before doing Girth work in order to gain girth:
Anatomically the tunica is build in a way that is keen on restricting the girth expansion. If it didn’t the penis would be wider then longer(which obviously would prevent procreation).
The tunica has two layers. One longitudinal(length) layer and one circular(girth) layer. Both containing and restricting the Smooth Muscle Cells in the CC which fill with blood to initiate the erection.
The longitudinal layer sits ABOVE the circular layer. THIS IS THE KEY.
Thus when an erection is initiated the circular layer is prevented to further expand by the longitudinal layer.
I think the longitudinal layer reaches its rigidity before the circular is able to.
Many know the effect where it seems that with a 80% flaccid or flushed dick it seems girth is bigger then when erect. This happens cause the circular layer is able to expand more when the restricting longitudinal layer isn’t at erection rigidity.
This is why Jelqing for girth is not recommended at 100% erection level. At 80% one can create more expansion with jelqs then a 100% erection level.
This out and inner layer concept is also evident with the Corpus Spongosium at the underside. It can expand quiet easy cause it misses the longitudinal layer restriction.
So to allow the circular layer to expand more we stretch the longitudinal layer before.
This means doing length work right before girth work.