I’ve been delving through these forums for over a week now, but after reading through ModestoMan’s personal research (ModestoMan - MRI of MY Penis.) I’m not really sure anymore on which stretches do what. Tell me if I’m wrong or right:
Stretching UP (from your LOT to the ceiling) stretches the Tunica and won't lower the angle of your erection over time.
Stretching DOWN (from your LOT to the floor) primarily stretches the Suspensory Ligament exposing the “inner penis” and lowering your erection angle. Downward stretching also stretches the Tunica but less so than upward stretching. And after the cap of Suspensory Ligament stretching is reached (as evidenced by a LOT approximately 7:30 and down), downward stretching’s only purpose would be to continue work on the Tunica.
So the stretches that are the hardest to gain from (about an inch a year) and are theoretically slow but unlimited length gaining potential are upward stretches? Yet at the same time, Jelqing will bulk the shaft (expanding outwardly in 360 degrees) giving you gains in both circumference and length.
Gains from Jelqing are also theoretically unlimited without recourse of loss over time because the Corpus Cavernosum is spongy tissue that can continually expand through growing new tissue fibers over old ones and is not, by any definition, similar to muscle fiber?
However, Corpus Cavernosum type gains will barely visibly affect flaccid length (and girth?) as the sole purpose of exercising them is to allow there to be more spongy tissue present to hold more blood during an erection. Tunica stretching, however, will increase both flaccid and erect lengths across the board.
So all long term PEing primarily targets the Corpus Cavernosum (Jelqs/Clamping) and the Tunica (upward stretches).
With that said, as a side question, what on earth is being manipulated in glans gains?