Thinking of a gym-related New Year's resolution? Listen to how Adonis Hill and Shanna Fried transformed their lives both physically and mentally.

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* Mara Schiavocampo is an Emmy Award-winning ABC News correspondent whose reporting is featured regularly on "Good Morning America." Mara has covered nearly every major news story of the last decade, including the Boston Marathon bombing, superstorm Sandy, the Occupy Wall Street protests, the Gulf oil spill, the Haitian earthquake and the 2008 presidential election. In 2015 she wrote her bestselling memoir, "Thinspired: How I Lost 90 Pounds -- My Plan for Lasting Weight Loss and Self-Acceptance."

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