Interesting post, Firegoat. I confirm that heat is important for good PE workout. After re-adding warm down to my routine, my gains restarted. It’s not a enormous gain, but I’m gaining. So, thanks for info.
Kbs: I think that doing 20min of fulcrum stretches with warm before/after/during workout it’s good enough. Don’t forget about jelqs.
As for extender, I don’t have any experience with it.