Travis Kelce says he feels 'old as f---' heading into his 12th NFL season

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Travis Kelce is not getting any younger. 

When the Kansas City Chiefs take on the Baltimore Ravens on Thursday night, Kelce will officially be commencing his 12th NFL season. 

His brother, Jason Kelce, asked him how he felt coming out of training camp on a recent episode of "New Heights with Jason and Travis Kelce."

"I mean reading 12 seasons, I feel old as f---. But today in practice I felt like I was flying," Travis Kelce said.

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Kansas City Chiefs tight end Travis Kelce, #87, warms up against the Chicago Bears prior to a game at GEHA Field at Arrowhead Stadium. (Denny Medley-USA TODAY Sports)

Travis, now 34-years-old, has played a lot of games during his NFL career. 

The three-time Super Bowl champion has played in 159 regular season games and has been exceptionally durable throughout his career, though it did not start that way. 

Kelce played a grand total of one snap in his rookie season in 2013 after injuring his knee during the preseason. 

The injury was originally deemed a bone bruise, but it was later revealed that he had a cartilage issue that required microfracture surgery that knocked him out of his rookie year.

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Kansas City Chiefs tight end Travis Kelce, #87, runs the ball as Detroit Lions safety Brandon Joseph, #40, attempts the tackle during the first half at GEHA Field at Arrowhead Stadium. (Denny Medley-USA TODAY Sports)

Following his rookie season, he has only missed four games in his other 10 seasons. 

Last season, he missed the season opener against the Detroit