In her evocative ethnographic study, Body Language, Kimberly Lau traces the multiple ways in which the success of an innovative fitness program illuminates what identity means to its Black female clientele and how their group interaction provides a new perspective on feminist theories of identity politics--especially regarding the significance of identity to political activism and social change. Sisters in Shape, Inc., Fitness Consultants (SIS), a Philadelphia company, promotes balance in physical, mental, and spiritual health. Its program goes beyond workouts, as it educates and motivates women to make health and fitness a priority. Discussing the obstacles at home and the importance of the group's solidarity to their ability to stay focused on their goals, the women speak to the ways in which their commitment to reshaping their bodies is a commitment to an alternative future. Body Language shows how the group's explorations of black women's identity open new possibilities for identity-based claims to recognition, justice, and social change.