It all came crashing down one morning in April 2015, when April Lund was 32. The evening before, she had stayed out late drinking, and she woke up alone in her apartment in Bismarck, North Dakota, with no idea of how she got there. “I blacked out completely,” she told Runner’s World. “That’s when I knew I had to change my life.” At the time, Lund was overweight and had been struggling with an alcohol addiction for about eight years. She had just moved to Bismarck from St. Louis, Missouri, where she said her social life centered around drinking. While...