Tensions high before premiere of 25th season of 'Dancing with the Stars'

HOLLYWOOD, California (WABC) -- As the 25th season of "Dancing With The Stars" gets set to premiere, tensions mount in the ballroom.

Nobody wants to be the first to be sent home and that creates special tension during the last rehearsal.

"I don't wanna die wishing. Thinking I coulda, shoulda, woulda," Shark Tank's Barbara Corcoran said. "So I'm gonna get it off my plate."

After several weeks of dancing with their professional partners, the stars now realize what they've signed up for.

Frankie Muniz said that the biggest shock for him was how sore he feels.

Former NFL Wide Receiver Terrell Owens agreed, saying, "Yeah, your body is put in positions that you've never been put in before."

"Even wrestling for like 12 years and playing soccer before that, my feet have never felt this much pain," pro-Wrestler Nikki Bella said.

Young singers, like Jordan Fisher, have an advantage since dancing is part of their act.

But still, Fisher said, "Ballroom is a completely different thing. You have to focus on every section, every limb, every ligament."

The biggest difference, Fisher said, is to be dancing with a partner for the first time.

A singer from a previous generation is also trying to put his best foot forward. Boy band singer Nick Lachey will be competing against his wife, Vanessa.

Nick and Vanessa are each teamed with two married pros who are also in the competition.

Nick is paired with Peta Murgatroyd and Vanessa will dance with Peta's husband, Maxim Chmerkovskiy.

"When I see her bumping and grinding on him I'm like 'it's all good' because I'm bumping and grinding on her husband," Vanessa said.

The 25th season of "Dancing With The Stars" premieres on ABC on Monday, September 18.