physiology of PE

Sorry to sound like a total newbie

but is there a link to somewhere that explains the basic principles and/or physiology of PE?

tried searching but all i came up with were exercises and glossaries and stuff

thanks! :)

Do a search on the word “deformation”. That will get you a few good threads and links to papers discussing things like: collagen, viscoelasticity, elastin, permanent deformation, loading, recovery, etc.