Daphne Mitchell, 35, doesn’t take an opportunity to go with friends on a short road trip outside of Albuquerque to pick wild raspberries for granted. “It blows my mind,” she says. It was a day she didn’t think was possible just a few years earlier. Walking any distance at all, let alone standing for more than five minutes, was a struggle for Daphne, who at her peak reached 530 pounds. “The doctor said I had almost bone-to-bone arthritis in both knees. He said if I didn’t lose weight that would be the least of my health concerns.”