GERALYN B. COOPERSMITH, MA, CSCS, is an exercise physiologist with sixteen years of professional fitness experience. Coopersmith is the Senior Manager of the Equinox Fitness Training Institute. She has written articles for and been featured in Elle, Glamour, Mademoiselle, Family Circle, Cosmopolitan, and other popular magazines. She is currently the resident fitness expert on the Fine Living Channel's lifestyle makeover show, Simplify Your Life.