No wonder Tom Brady had such a rough outing earlier this year on Monday Night Football against the Kansas City Chiefs. As it turns out, that game was played well past his bedtime.

The game in question, on Sept. 29, started at 8:30 p.m. ET. That, according to New England receiver Julian Edelman, is Brady's bedtime. Brady went 14-for-23 for 159 yards to go along with two interceptions and one touchdown in that loss. Since then the Patriots have won five games in a row and are now all alone in first place in the AFC East (only one of those games, on Oct. 16 against the Jets, was played at night.)

In a recent column ESPN's Bill Simmons says Edelman told him that Brady is so adamant about his football longevity that he goes to bed well before people twice his age.

Brady confirmed that habit during his weekly radio interview on Boston's WEEI:

"I do go to bed very early because I'm up very early," Brady said, according to Business Insider. "I think that the decisions that I make always center around performance enhancement, if that makes sense. So whether that's what I eat or what decisions I make or whether I drink or don't drink, it's always football-centric. I want to be the best I can be every day. I want to be the best I can be every week. I want to be the best I can be for my teammates. I love the game and I want to do it for a long time. But I also know that if I want to do it for a long time, I have to do things differently than the way guys have always done it."

Perhaps this is why, at 37, Brady is still one of the best quarterbacks around. Through nine games he's on pace to throw for 4,252 yards and 39 touchdowns.

While his sleeping habits may help his productivity, unfortunately for Brady he tends to miss some important events because he's in bed. Two years ago Brady was asked by reporters whether he felt an earthquake that rocked the Northeast. He said he did, and that it happened at 7 p.m., right before he went to sleep.

"7:15 I was asleep," Brady said. "Trying to get bright-eyed and bushy-tailed."

Tom Brady And Gisele Bundchen

Tom And Gisele

At the Costume Institute Gala celebrating 'Superheroes:Fashion and Fantasy' at the Metropolitan Museum of Art in New York.

Tom And Gisele

At the 'Schiaparelli And Prada: Impossible Conversations' Costume Institute Gala at the Metropolitan Museum of Art in New York.

Tom And Gisele

At the Costume Institute Gala Benefit to celebrate the opening of the 'American Woman: Fashioning a National Identity' at the Metropolitan Museum of Art in New York.