The concert series he’s held in the last few years are Herculean for somebody in their fifties.
I think he needs to cut back in the future.
He did an interview recently in which he said the set is structured for him to take breaks by sitting at the piano(s) for stretches of time. He doesn’t run around on stage and he doesn’t drink water until after the show.
I read recently that after the breakup of the Beatles he became very depressed. He needs to perform as it’s all he’s done since he was 15.