Curious to know how celebrities squeeze fitness into their daily lives? Want to know the secrets of the stars? Bi-weekly our That's Fit fitness expert Fitz sits down with the celebs we want to know more about, and digs out their great and not-so-great methods to staying healthy.

Kellie Pickler has gone through a wicked physical transition of the past few years. When she auditioned to appear on American Idol, at five feet tall, she weighed in as a featherweight 100 pounds. But by the time the competition and Idol tour was over, she had packed on 28 pounds in less than a year. That's a lot of weight on a very little person. The weight gain made Kellie feel bad, but one fellow celebrity (whom most people love and adore) helped her see the light and lose the weight. Read on to hear her story.

Fitz: Your body has changed a ton since you landed in the spotlight. Tell me about that.

Kellie: Oh my goodness! My body has made a big transformation. When I auditioned for Idol I was only 100 pounds and kind of riding on "the young card." Although I exercised a ton, I think I stayed thin because I was ... young! But my eating habits on Idol and the during the tour became terrible. We were always eating fast food on the road and having late night munchies. I gained 28 pounds in less than a year!

Fitz: How'd you take it off?

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There are so many differences between how men and women are treated in the world, and here's another: When angry, men are admired, whereas women are thought to be irrational. What do you think about this? I for one do believe that women are perceived this way; so often, both men and women are quick to label an angry woman as a witch (or another word that rhymes with that.)

I suppose it's an evolutionary response--historically, powerful, commanding males were the most successful, while women who were good at mothering were favoured. But that notion is outdated and unfair -- a lot has changed since the caveman ages and so should how we women are regarded.

I suppose not getting angry is a solution that women can look towards, but how likely is that? How can powerful women command the same admiration as men when we speak our minds?

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