Pumping Iron197786 min7.3DocumentaryLoading watch options…Amateur and professional bodybuilders prepare for the 1975 Mr. Olympia and Mr. Universe contests as five-time champion Arnold Schwarzenegger defends his Mr. Olympia title against Serge Nubret and the shy young Lou Ferrigno.DirectorGeorge ButlerCastArnold SchwarzeneggerLou FerrignoMike KatzSerge NubretFranco Columbu