Heather Mayer Irvine is the Food and Nutrition editor of Runner’s World. She lives and runs in Bethlehem, Pennsylvania, with her husband, Jeff, and their son, Finn. Heather’s work has appeared in Runner’s World, The Associated Press, Glamour, Discover, Health.com, The Huffington Post, and CNN. She has a marathon best of 3:31, half marathon best of 1:34, 5K best of 19:46, and 1 mile best of 5:37. Heather has never met a burger or ice cream sundae she didn’t like.