Maribel Contreras, 38, 5'6" El Monte, Calif. Before: 217 lb., size 16 After: 140 lb., size 6 Total pounds lost: 77 Total sizes lost: 5 My whole life, I was a yo-yo dieter. I would restrict calories to drop weight, only to binge-eat and put it back on. In 2009, after giving birth to twins, I left a job I loved to move to San Gabriel Valley, Calif., and soon turned soda and Doritos to cope with all the stress. In July, 2013, my poor eating habits and lack of movement finally caught up with me; I hit an all-time high of 217 pounds, more than what I weighed while pregnant. Then my doctor told me I was prediabetic; I knew I had to make a change. To know more details click this Lose weight fast