Christine Alexander is a water fitness instructor for the City of Plano Parks and Recreation Department at Oak Point Recreation Center. She teaches additional classes for the City of Addison, the City of McKinney, and the YMCA. She is a nationally certified water fitness instructor and an instructor-trainer through the United States Water Fitness Association. She is also a certified water fitness instructor through the YMCA of the USA and an Arthritis Foundation Aquatic Program instructor. She has served as a board member for the Metroplex Association of Aquatic Professionals, including a three-year term as president of that organization. As an advocate for water fitness, Alexander regularly presents master workouts and has conducted her own introductory course for water fitness instructors. She also enjoys mentoring beginning water fitness instructors.

Alexander lives in Plano, Texas, with her husband, Jim. In her free time, she enjoys weight training, cooking healthy meals, and organic gardening.