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 (1978 film) edition was released, followed by an HD DVD release and Blu-ray. Also available (with other films) is the nine-disc "Christopher Reeve Superman Collection" and the 14-disc "Superman Ultimate Collector's Edition." On November 6, 2018 (following year-long worldwide revival theatrical screenings to commemorate the 40th anniversary of the film’s original release), Warner Bros. Home Entertainment released an Ultra HD Blu-ray of "Superman" presented in a new Dolby Vision transfer of the original theatrical version straight from the original camera negative, with its original 70mm/six-track stereo mix rendered in 5.1 surround, in addition to the 2000 remix in Dolby Atmos. This new