Superman (Salkind films) adopted a high protein diet. He added of muscle to his thin frame. He later made even higher gains for "Superman III" (1983), though for "" (1987), he decided it would be healthier to focus more on cardiovascular workouts. One of the reasons Reeve could not work out as much for "" was an emergency appendectomy he had in June 1986. Reeve was never a Superman or comic book fan, though he had watched "Adventures of Superman" starring George Reeves. Reeve found the role offered a suitable challenge because it was a dual role. He said, "there must be some
Superman IV: The Quest for Peace Luthors. He places Lenny in Boys Town, telling the priest that Lenny has been under a bad influence, and returns Lex to prison. In 1983, following the mixed-to-negative reaction to "Superman III", Reeve and the producers, Alexander Salkind and his son Ilya, assumed that the "Superman" films had run their course. Reeve was slated to make a cameo in 1984's "Supergirl" but was unavailable; that film was a box-office failure. Two years later, Ilya Salkind sold the "Superman" franchise to Golan and Globus of Cannon Films. According to Jon Cryer, who played Luthor's nephew Lenny, Reeve had taken him aside