If you were to play in the National Football League (NFL), you would be considered "old" by the age of 40, especially if you were a quarterback. Even so, quarterback Brett Favre remained in the NFL until he was 41 — after he had already become a grandfather. 

In 2010, Favre announced on his website (via grandparents.com) that his 21-year-old daughter, Brittany Favre, welcomed her first child, Parker Brett, on April 2, 2010. Since retiring from football, Favre has become a grandparent to two more children — all boys.

In an interview with The Rich Eisen Show, Favre explained how he would feel if his three grandsons grew up to play football, saying, "I'm not gonna encourage them to play football, I'm not gonna discourage them, but I would much rather be a caddie for them in golf than watch them play football." 

Recognizing that many would think his reasoning to be "crazy," he told of his fear of head injuries, like concussions, calling it "a scary issue." You can't fault him for wanting to keep his grandkids safe!