Tyeeris, you may want to do a search on this. There are some thoughts on actually ending a stretching routine with cold instead of heat (applying the cold while still in the stretched state) as is done with some physical therapy applications.
The idea that heat is helpful in the plastic deformation of tissues and cold would help to (harden) in the new elongated state.
I don’t pretend to know if this theory is actually valid for PE but it is another view.
Do a search and see what you feel makes the most sense. Good luck.