Last week, CNN featured one of its alumni from Fit Nation, Annette Miller. In 2013, she completed the Nautica Malibu Triathlon. This was a great achievement for her, especially after everything she has been through. More than two years prior to her completion of the triathlon, Annette was faced with disappointment when she was told she couldn’t donate a kidney to her twin sister because of her weight. She was 385 pounds. After her twin sister recovered from her transplant from another donor,...