Maria Loi, international ambassador of Greek gastronomy, restaurateur, and public personality, is widely regarded as "the Martha Stewart of Greece." The author of multiple cookbooks, including the official cookbook for the Athens 2004 Olympic Games, Maria is known to be the authority on Greek cuisine. Maria has cooked at the White House for President Barack Obama, Vice President Joe Biden, and 250 guests. She opened Loi Estiatorio in the heart of Manhattan to rave reviews. Maria also takes pride in philanthropic work; she is a founder of Elpida, a foundation to support children with cancer. Sarah Toland is a longtime health and nutrition journalist and former professional track-and-field athlete. She is currently the food and nutrition director of Prevention magazine and has appeared regularly as a weight-loss expert for Fox News Channel. Sarah also served as the senior health editor of Men's Journal and Alternative Medicine, the editor in chief of Inside Triathlon, and has written on health and fitness for the New York Times and Sports Illustrated, among other national publications.