I was reading around a bit, and I’d like to toss this out as a another possible reason why gains slow rather than simply fibrosis.
Slowing Gains Theory
“I have a theory that the quick early gains are due to maximizing the existing tissue
and further gains must be from actual stretching and hyperplasia or hypertrophy of the tissues.
This is a slower process and would require a very disciplined routine to force.”~NotEnough
I think there could be some rearranging that takes place in the beginning. I am not sure if rearranging can account for the length and girth increases some guys get though in their newbie gains. I think it is worth thinking about.