AceShowbiz -

The cast of "Dancing with the Stars" season 10 have just been announced this week but they have flexed their muscles for sometime. Evidence from their rehearsals emerges in the form of several pictures taken while they tried some moves with their respective professional dance partners.

Jake Pavelka, who shocked people by choosing the villain as his fiancee on "The Bachelor", is seen sitting on the floor while Chelsie Hightower leans on him from behind. Buzz Aldrin, the oldest contestant this season, works the floor with Ashly Costa. "This dude, for an 80-year-old - he could probably bench-press me if he wanted to," competitor Evan Lysacek says.

Meanwhile, Nicole Scherzinger, whom many thought was an unfair addition due to her career as a dancer, admits she has suffered early injury. "It's day two, and look at my heel," the singer tells MTV News while revealing a red cut. "It's ugly. Look at that. My feet are so beat up, after just a couple days of rehearsals, and I'm not used to these shoes. Sure, I'm used to wearing 7-inch heels with The Pussycat Dolls, but this is a different style of dancing and a ballroom shoe."

The season of dancing will be kicked off March 22 on ABC.