Jenna Glatzer is the author of 27 books, including Unthinkable by Scott Rigsby, Never Ever Give Up: The Inspiring Story of Jessie and Her JoyJars, and Unbroken: A Memoir. She has written hundreds of articles for magazines and online publications, including Woman's World, Women's Health, Fitness, Prevention, and USA Today. Visit her online at www.jennaglatzer.com.