My Dad has just found out he has lymph node cancer, we don't know any other details yet. He doesn't have any energy and hasn't been out for over a month. He has been to appointments and popped out on odd occassion that he needs something but other than that he doesn't have any energy to do or go anywhere. He used to go out every day if only for an hour so now it is very strange. What can he do to build his energy as it is really getting him down? :-(