Yesterday, the son of Arnold Schwarzenegger, who was born by his housekeeper, celebrated his 26th birthday.

In his documentary, the actor admitted that at first he did not believe that Joseph Baena was his son.

‘I really didn’t know, but the older he got, the clearer it became to me,’ he admitted.The bodybuilder

shared new photos on the Instagram social network and talked about his new achievement (we are sure that his father is proud of him).

He admitted that before his birthday, he decided to challenge himself by participating in a triathlon.

‘I really believe that if you have muscles, you should know how to use them,’ he joked. By the way, the man has a little more than half a million

subscribers on the Instagram social network. Most often, she shares photos from the gym (or just shows off her athletic figure).