Zac Efron’s role in “Iron Claw,” where he played Kevin Von Erich — a wrestler with a tragic past -– kickstarted a debate over his training habits. According to GQ, the first official images of Efron taking on the role of Erich were released in July 2023. However, on-set photos of Efron looking substantially bulkier than usual floated around on Reddit a year earlier. Several users assumed that Efron used steroids to achieve his exaggerated muscles. One top comment read: “Feel bad people don’t realize this is only possible with roids.” Another user implied that Efron and Erich had indulged in steroids. “Zac Efron took method acting to heart with Kevin Von Erich’s roid cycle.” With that said, Efron has never admitted to using steroids.
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Plus, The British version of GQ interviewed personal trainer Farren Morgan, who explained that Efron likely naturally achieved his results by bulking. “Bulking is a widely used term in fitness for those that have decided to increase their caloric intake and combine this calorie surplus with intensive weight training to increase their muscle mass and strength,” Morgan explained. The fitness coach also noted the importance of developing a proper workout routine. “As a wrestler, Zac would need to focus on bulking workouts to optimise his strength and mobility training so that he remains fast and agile,” added Morgan.