The primary purpose of this study was to assess the efficacy of a family-based exploratory community study titled BOUNCE (Behavior Opportunities Uniting Nutrition, Counseling, and Exercise) to increase physical fitness and activity in low-income Latino mothers and daughters. The BOUNCE study consisted of a 12-week exercise (e.g., Latin dance), nutrition education, and counseling intervention. The design included a two-arm parallel group assignment to an experimental group (EG; included 26 mother-daughter dyads) and comparison group (CG; included 20 mother-daughter dyads). Pre- and postintervention 20-Meter Endurance Shuttle Run Test and accelerometry were used to measure children's aerobic capacity and physical activity, respectively. For the mothers, the Rockport Walk test and Non-Exercise Physical Activity Rating test were employed to assess aerobic fitness and physical activity. Anthropometric, demographic, and dietary assessments were also collected pre- and postintervention. Differences in outcome measures between groups were tested using repeated measures analysis of covariance. The BOUNCE intervention had a significant effect on EG Latino daughters' aerobic capacity (P = 0.044). Although not statistically significant, EG daughters reported a higher reduction of high fat food and sweetened beverages and an increase in fruit and vegetable consumption compared to CG daughters. Similarly, EG mothers reported more strategies to increase fruit/vegetable consumption and reduce fat intake compared to CG mothers. No changes in physical activity or BMI were observed between EG and CG mother-daughter dyads.