Chicago Cubs catcher David Ross has been enjoying his year-long retirement party after he announced that the 2016 season would be his last, but in a new interview, the catcher reveals that there is more to his decision to walk away than just wanting to spend time with his family.

In a piece written by Gordon Wittenmyer of the Chicago Sun-Times, Ross revealed that his history of concussions has played a serious role in his decision to leave the game, and he said that he didn’t like what the head injuries he’s suffered in his career did to him in his home life:

“You get hit in the head and get that feeling and it doesn’t go away,” he said. “And you’re annoyed, and you’re just not the same person. It’s nothing you can fake. You’re not a good dad; I’m short with my kids and my wife. And you get seasick riding in a car and can’t be in public places.

“It’s miserable. It’s a nightmare.”

Ross has gone on the MLB concussion list twice during his career with the Cubs, including once during the 2016 season.

Despite the issues that’s he suffered, he is still sharply focused on finishing off his career with a bang, and that begins with playing against the Los Angeles Dodgers in the NLCS.

“I can’t worry about that,” he said. “I’ve got to worry about the Dodgers’ lineup. I’ve been so blessed and fortunate to have this career, and everything that’s happened to me has made me a better person, whether it’s good or bad. I’ll worry about that stuff when I’m done, at home.”