Arnold Schwarzenegger 'pushes' his bodybuilder son Joseph Baena in the gym Hollywood veteran Arnold Schwarzenegger "pushes" his bodybuilder son Joseph Baena in the gym and makes sure he doesn't "slack off". 15 April 2026 Arnold Schwarzenegger "pushes" his bodybuilder son Joseph Baena in the gym and makes sure he doesn't "slack off". Arnold Schwarzenegger supports his son Joseph Baena with his bodybuilding training The former Mr.