Arnold Schwarzenegger’s son is following in his jacked footsteps. Joseph Baena, 25, took on bodybuilding like his father and has now officially earned professional status in just his second show ever, he revealed in an interview posted on Instagram . “I’m really excited to be a part of the INBA and to experience this wonderful program,” Baena said. “My fitness journey, it’s been a long time.” Baena won the INBA Iron Gladiator Classic Physique title, celebrating the win on his Instagram story. “

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