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) the work himself, and was suspended as high as 50 feet in the air. Counterweights and pulleys were typically used to achieve flying movement, rather than electronic or motorized devices. The thin wires used to suspend Reeve were typically removed from the film in post-production using rotoscope techniques, although this wasn't necessary in all shots (in certain lighting conditions or when Superman is very distant in the frame, the wires were more or less imperceptible). For stationary shots where Superman is seen flying toward or away from the camera, blue screen matte techniques were used. Reeve would be photographed suspended