At NPC bodybuilding championships: Grandma, what rock-hard abs you have!

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Chris Bumstead on Instagram: "You guys have been asking for this for a while now... Just uploaded a new video to YouTube explaining how to hit a vacuum, just a few times quick tips and tricks that have helped me🙏🏼 Click the link in my bio to check it out🔥 @gymshark @mrolympiallc P.S. yes I almost passed out after filming this💀 #ClassicPhysique #Bodybuilding #VacuumPose"

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