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The 4th of July is a day out of the office to celebrate American independence - but serious fitness buffs

But he wasn't the only notable person putting in some work in for the Red, White, and Blue: Arnold Schwarzenegger, one of the stars who made the gym's original Venice location "The Mecca of Bodybuilding" back in the 1970s, also dropped in for a lift.

"What a way to start the 4th! With @schwarzenegger and Pete ... at the original @goldsgymin Venice. #4thofjuly," Jackman wrote on Instagram.

"Fantastic to see you and train together!" Schwarzenegger responded on Twitter.

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Arnold wasn't done responding to his celebrity friends on social media after acknowledging his morning session with Jackman. He also answered the #Flex4Forces challenge from massive White House chef and veteran Andre Rush, and showed off his still-formidable biceps.

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Not bad for a seventy-year-old just coming back to full-power from open heart surgery.