Audrina Patridge: DWTS rehearsals are toning my legs and calves

The Hills alum Audrina Patridge is looking forward to competing on Dancing With the Stars, but says the nonstop rehearsals are tougher than she had ever imagined they'd be.

"My legs are so sore!" Patridge told Us Sept. 8. "[It's really hard] going through the entire routine without stopping because you run out of breath. It's like, 'I don't know if I can stand this for 15 more hours!'

"I'm really hard on myself. I'd rather just keep going and going and going instead of taking a break."

Audrina, who's paired with Tony Dovolani for Season 11 of DWTS, says the nonstop training is whipping her into fantastic shape. "My calves and my legs are really getting tighter," she says.

"I've discovered muscles I never knew existed on my body," adds Patridge, 25. "The muscles right behind my knees are killing me, my calves, my arms, my thighs, everything.

"I'm really hard on myself. I'd rather just keep going and going and going instead of taking a break."

Dovolani, 37, who was previously partnered with Kate Gosselin on Season 10, has nothing but praise for Audrina.

"Right now she's her own competition -- she pushes herself to the end," he says.

Season 11 of DWTS premieres Sept. 20 on ABC.

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