Mick Jagger (age seventy-five) works with a personal trainer. “I train five or six days a week. . . . I alternate between gym work and dancing, then I do sprints. I’m training for stamina.” Jane Fonda (age eighty-one) works out every day with long walks and weights. As Dylan Thomas advised, they are not going gently into the night. Interacting with the world also enhances creativity. The interactions don’t have to be especially complex, and they certainly don’t have to be boundary pushing or dangerous.
