However, he did say on the Dan Patrick Show he probably wouldn't tell his own wife if he had a head injury. It wouldn't be because he would be afraid she might tell somebody, though.
"I wouldn't want her to worry," Brees said.
He did say that self-reporting head injuries is a "gray area." For one thing, players are often unaware of the severity of their head injury when it happens.
Brees recalls the publicly reported concussion he sustained in 2004.
"I knew that something was not right. I knew that I was concussed," Brees said. "But I didn't take myself out of the game. I mean, I stayed in the game and played as long as I could until finally a coach pulled me aside and was like, 'I'm looking out for you here, and you're not gonna play anymore.'
"And that's why it's hard to change that mentality for guys. When you're in the heat of the moment, heat of the battle and it's competitive, you do not want to pull yourself out. That's why the concussion protocols are in place where you've got the independent neurological consultants and the trainers and the referees. Everybody's supposed to be looking."
Brees, 38, is entering his 17th NFL season, but added he "absolutely" thinks he could play until he is 45.