This next chapter in the flagship Generation Iron film series explores the controversial world of professional natural bodybuilding by following top pros competing for the Natural Olympia title in a league dedicated to ensuring all competitors are free of performance enhancing drugs. With drug use evolving at a rapid pace across sports and entertainment, natural bodybuilding as a whole has been criticized and questioned. Can the league guarantee that these competitors are truly natural?
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Trailer
Generation Iron: Natty 4 Life - Official Trailer (HD) | Bodybuilding Documentary
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