difference between morning erections and provoked erections. Why?

[España1980]

Hello, a question that has nothing to do with implants, but it has surely happened to someone. I have corporal fibrosis and it is very difficult for me to reach a normal erection, and when I arrive I observe a narrowing before the glans as well as an upward curve. On the other hand, when I have morning erections, this narrowing or hourglass is not noticeable and the curve is also less; in any case, the erection is quickly lost as soon as I begin to manipulate the penis. But my question is why morning erections and provoked erections are so different. in terms of penis shape and hardness.
I know that this is a section of the forum about implants. But since everyone has stopped due to erectile dysfunction, I think that surely what I am describing happened to someone too. and can you help me know the difference. I look at my penis in the morning and it hardly seems like I have a problem. until I move to handle it or wake up fully or get out of bed. why is this happening

[frwmw1]

My theory is that morning erections exist to stop penile atrophy, and that's a highly underrated function, and when in certain positions, venous leaks can be stopped, so the pressure is higher than normal and so the scarring is most flexed and your penis looks more natural. I theorise then that during stimulation, the venous leak is more active and the pressure doesn't accumulate to stretch out the penis fully.

[seekonk]

If you sleep on your side, the position may “plug” any venous leak on that side so you get fuller.

[España1980]

If you sleep on your side, the position may “plug” any venous leak on that side so you get fuller.

Exactly when I sleep on my side many times I wake up with good erections and it seems that I have no problem, until the moment I move