Diane Sawyer says goodbye to 'Good Morning America', hello to ABC 'World News'

Diane Sawyer is leaving "Good Morning America" and will pop back up on a TV near
you on December 21 as the anchor of ABC "World News". Photo/ABC

Diane Sawyer said goodbye to her 10-plus year run at "Good Morning America" on Friday.

"And for one more time, good morning America," the 63-year-old TV journalist said at start of the show.

"My heart is smiling," she said. "The privilege of sharing my mornings with all of you has been more than I can say."

Co-host Robin Roberts called her the "queen of morning television" but not so fast. Sawyer will still be around if she's one of your faves.

Read Adam Lambert's feelings toward Good Morning America when they cancelled his show!

Sawyer will be replacing Charles Gibson on ABC's "World News" starting December 21, when Gibson retires. To take Sawyer's place on "Good Morning America" will be George Stephanopoulos, starting on Monday. So she's still kicking...must be those savvy at-home weight workouts from celeb trainer Jim Karas.

Sawyer's "Good Morning America" Workout

Karas, Diane Sawyer's trainer and author of the book  ''Flip the Switch: Discover the Weight-Loss Solution and the Secret of Getting Started'',, trains his clients with inflated rubber balls, free weights and resistance bands.

"He prescribes two to three sessions of 20 minutes each a week, with five minutes of cardio to warm up," said the New York Times of his resistance-cardio workouts. According to Karas, all one needs to shape up is two to three sessions of 20 minutes each a week, with five minutes of cardio to warm up.

Sawyer first started working with Karas (shown left) when she was close to 160 pounds. She made a pledge to herself and to her viewers to "get in shape".

With the help and weight-loss expertise of Karas, Sawyer shed more than 20 pounds in just 3 months on his plan, according to Extra. The first thing he told her to do? “Toss out your treadmill. Just throw it out!”

Sawyer started by cutting back calories consumed on a daily basis and focused more on resistance training and devoting less to traditional cardio - Usually a 5-minute cardio warm-up.

Karas told Extra, “If you build muscle and increase strength, you're going to build up your body and boost your metabolism 24 hours a day.”

Sawyer credits the workouts with giving her the energy it takes to wake up at 3AM every day and told Extra of her results, “I lost three inches on my arms in just a few months.” (Photo/Matthew Rodgers)

See Diane Sawyer's goodbye to "Good Morning America" here.

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