Jack not sticking with his PT is the worst act of laziness he has ever done. He legit could have gotten that arm and hand back, probably even some face muscle ability and swallowing since they have exercises for that as well. There is a famous electronic musician named cosey fanni tutti who had a stroke and was completely paralyzed on the side of her face and she got into playing a little toy coronet and it completely restored all her muscles. Se was jacks age too. PT is amazing stuff, the human body can heal itself but you have to put effort. Nothing speaks more to Jack being an absolute useless pile of white trash then just allowing himself to decay so horribly and so rapidly.