As the youngest celebrity to ever appear on Dancing with the Stars, Cody Linley is already experiencing pressure.

But combine that with a beautiful partner who holds two Dancing with the Stars trophies and the actor's knees must be perpatually knocking.

“A lot of people are saying, ‘You’ve got the best partner so you better step up your game!’” Linley told People Magazine, adding that physical woes were adding to his current problems.

"The first couple of weeks I got really sore…in parts of my body that I never knew had muscles!” he said. “Like the inside of my legs? I never expected that to hurt.”

Cody and Julianne have been sizing up the competition, and Hough predicts her brother Derek Hough, and his partner rooke Burke will be a factor. Why? Because Burke's “legs and arms are hyper-extended, which is what you want in dancing.”

However, Linley thinks the show’s oldest competitor, Cloris Leachman, will be a formidable opponent.

“She’s super feisty,” Linley said about the 82-year-old actress. “She was already trash talking and everything! She was like, ‘You think you can take me? So you’re the youngest and I’m the oldest. Well, I’m going to show you up so get ready, buddy.’”

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.