'Dancing' stars fight through exhaustion

Hollywood Wrap with George Pennacchio
LOS ANGELES Donny Osmond, Joanna Krupa, Mya and Kelly Osbourne are the final four of Season 9.

Exhaustion won't keep any one of them down.

"Right now, I think everybody is so tired, but the exhilaration of making it to the top four, it's all worth it. I mean, we all get blue eyes and more makeup but it's all worth it," said pro dancer Louis Van Amstel.

"We actually have a plan developed already. We have a board," said pro dancer Dmitry Chaplin.

Chaplin's partner Mya says he's a strict teacher.

"There's punishments, there are fines if you show up late, no cell phones in the studio. We have a bed that we've purchased, a blanket and a pillow for the studio and power naps," explained Mya.

"Yes! And we have a rule: Listening to Dmitry," Chaplin joked.

"I have two ears, sure," replied Mya, pointing to her ears.

Joanna Krupa and her partner, Derek Hough, say there's no rest for the weary.

"We're not taking any naps. We're not sleeping. We're just working 24/7," said Krupa.

"Yeah, there's no time for sleep, we'll sleep when we're dead," said Hough.

"We're robots, except my batteries are dying and I need another one before I die," said Krupa.

Donny Osmond and his partner Kym Johnson also hope to spark some magic on the dance floor with some help from his past.

"We're dancing to my first number one record, 'One Bad Apple,'" said Osmond. "It's going to be so fun."

"It's going to be so much fun," said Johnson.

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