Neil Patrick Harris is gearing up to host the 2013 Emmy Awards Sunday for the second time and has been rehearsing by "dancing his face off."

The actor took to Twitter to share with fans an update on his progress of getting well prepared for the big day, tweeting, "Been dancing my face off in rehearsals for the choreographer's # in the @PrimetimeEmmys. I've such crazy respect for these dancers. Unreal," he wrote on Sept. 18.

At a ceremony on Wednesday, the 40-year-old actor revealed what viewers can expect from his hosting gig.

"I'll be staying on stage the whole show - with a few exceptions," Harris told Yahoo! News. "[I] thought about having a colostomy bag. I thought that would not be good for the first few rows. There's a lot of awards, so I thankfully don't have to do a lot of work. I get to come up with some funny one-liners."

"If someone vomits, I get to joke about it, but there's not a lot of vomit. Charlie Sheen hasn't been on Two and a Half Men for years," he added.

Harris hosted the awards show back in 2009 and he was well received. He previously spoke about how much he loved television and how much he is honored to be involved with an event that recognizes it.

"I love TV and the motley crew of people that are part of it. With so many TV offerings of every type, I think that makes for a better viewing experience of television than ever, and I'm happy to be the guy in charge of honouring that," Harris told USA Today.

The 65th Primetime Emmy Awards ceremony will be held at the Nokia Theater, L.A. on Sunday and will be broadcasted live on CBS at 8pm ET and 5pm PT.

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