fat when she starred on the reality TV show "The Hills" in 2009, and slimmed down dramatically a few years ago after seeing an unflattering photo of herself. She has been a fitness fanatic ever since.

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Samantha Chang is the executive editor and co-owner of www.theimproper.com., an arts and entertainment website in New York City. A graduate of the University of Pennsylvania, Samantha enjoys running, cycling and taking photos. Contact her at schang@theImproper.com.President Obama continues to insist he's not paying close attention to the Republican presidential race.

In an interview with NBC's "Tonight Show" set to air Tuesday evening, the president likened the GOP contest to the reality show "Survivor" and said he won't watch the debates until the race has narrowed.

"I'm going to wait until everybody is voted off the island," Obama told host Jay Leno, according to excerpts of the interview released by NBC. "Once they narrow it down to one or two, I'll start paying attention."

Still, Obama used his second appearance on the show as a sitting president (and fourth overall) to take aim at the harsh political climate in Washington and to chide Republicans for opposing his policies.

Asked about GOP criticism over his plan to withdraw troops