Karin Kimura, co-owner of A2O Fitness, is built like a brick house. When you meet her, you want her to whip you into the same shape. To introduce themselves to Boise, A20 held a media weight-loss competition. BW and Fox 12 went head to head, and BW came out on top. But we didn't even care about winning. After eight intense weeks, our clothes were looser, we had more energy and, since we couldn't bear to leave her at the end of the competition, we decided to hang out with her for another year. She still tries to destroy us two days a week, but with all the strength we're gaining by working out with her, we might be ready to take her on. Someday. Maybe.