Arnold Schwarzenegger just turned 71, if you can believe it, but the former bodybuilder and movie star is still in great shape.
But his son, 21-year-old Joseph Baena, just shared a video of himself on Instagram that reminded Schwarzenegger's fans of the actor in his prime.
Of course, it's no surprise when children grow up to look like their parents. But some celebrity kids have an uncanny similarity to their parents, and that's definitely the case with Baena.
He showed off his muscles in a video from the gym on Tuesday, and many commenters couldn't resist pointing out that he looked just like his dad in vintage photos from his bodybuilding days.
One fan called Baena "Baby Arnold," while another joked that he had inherited "Terminator Genetics" from his famous father.
Baena, who is pursuing an acting career after earning a business degree, actually played the Terminator in a video he made with his friends.
And he's very close with his famous father these days. But that wasn't always the case.
Joseph was born out of Schwarzenegger's affair with his housekeeper, Mildred Baena. The actor claimed he didn't realize Joseph was his son, at first, but he soon "started looking like me, that's when I kind of got it. I put things together."
When the actor eventually admitted the affair to his wife, newscaster Maria Shriver, it lead to their highly publicized separation.
As Schwarzenegger told radio host Howard Stern in 2015, "It's a very tough situation for my kids. Very tough situation for my family. It was tough for everybody. But it has happened and now we have to figure it out, right?"
Despite the unusual beginning to their relationship, Baena and Schwarzenegger have obviously worked things out. The pair love to share photos of themselves bonding together, including at the gym.
The proud dad even bragged about Baena's dedication in a recent interview with Men's Health.
"Patrick, he works out every day, but he doesn't want to get too big because of the acting, because he's being sought after now for romantic roles, not action roles," Schwarzenegger revealed.
"But eventually, when he gets to be like 30, 35, he will go get bigger and then do more action movies. But I love seeing [my sons] work out and being into it. It's a great feeling."
Baena is just one of Schwarzenegger's five children. He shares four with his ex-wife Maria Shriver.