 This study is a 24-week experimental trial to examine whether intervention recommendations promote long-term adherence to a pedometer-based physical activity regimen. A two-group, block design will be used in the proposed study. Eligible women will be randomly assigned to one of two experimental conditions n75 per condition: 1 receiving a 10,000 stepsday recommendation and 3 health education sessions or 2 receiving an adaptive recommendation and an obesity prevention intervention. The adaptive step recommendation will update participants recommended step counts, starting at 7,000 stepsday, then 8,000 stepsday, then finally 10,000 stepsday. Participants in the adaptive recommendation group will be provided with 3 educational sessions and will be asked to report their daily progress on weight maintenance goals via text message. 