Joseph Baena, 25, and Arnold Schwarzenegger have a lot more in common than just a passion of bodybuilding. It's getting increasingly obvious how similar Baena's genetics are to Arnie's as he keeps working on his physique in the gym. The actor has recently developed a serious interest in bodybuilding. Baena wants to develop a physique to compete with that of Hollywood's greatest leading men, even though he has no intention of competing on the bodybuilding stage. The teenage bodybuilder revealed something he learned while training in his most recent physique update.