Jimmy Kimmel Jimmy Kimmel

Jimmy Kimmel points to an enormous new treadmill in his office. The Jimmy Kimmel Live! host recently installed the contraption, which sports a large tabletop to conduct business while exercising, and has taken to walking on it while working. "I read somewhere that sitting all day can cut 15 or 20 years off your life," he explains. "It's worse than smoking. We weren't meant to sit this much."

Photo Gallery: Jimmy Kimmel channels the Emmy nominees for Best Drama Series
It's hard to believe that Kimmel has much time to sit down anyway — or eat or sleep, for that matter. The ABC late-night host is in the middle of the biggest year of his show, and, quite possibly, his life. So far in 2012, Kimmel has made nice (and become pals!) with Oprah Winfrey; hosted the White House Correspondents Dinner to great reviews (including high marks from the president); was tapped to host the 64th Annual Primetime Emmy Awards on Sept. 23; subsequently scored the show's first-ever Emmy nomination for variety series; and even got engaged to girlfriend Molly McNearney, the show's co-head writer, while on vacation in South Africa.

"And," he quips, "I'm pregnant."

Next month, Kimmel takes his show on the road to his native Brooklyn, where his guests will include Kimmel's teenage radio idol, Howard Stern. Then, just in time for JKL's 10th anniversary in January, Kimmel is getting a huge promotion — a move to 11:35 p.m. directly against late night staples The Tonight Show with Jay Leno and Late Show with David Letterman. "The past 12 months have been a hurricane," says The Voice's Carson Daly, a close friend who calls Kimmel "the big brother I never had." "It's been really exciting to watch. It feels like fate. It's all been so natural for him with nothing but hard work."

ABC's Jimmy Kimmel Live Gets a Time Slot Upgrade

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