The current study, a randomized controlled trial (RCT), represents the next step of the efforts to to extend the research on physical activity to the community setting; community volunteers will deliver the intervention, thereby making physical activity interventions much more accessible to survivors. In partnership with the National American Cancer Society office (Atlanta, GA) and Reach To Recovery (RTR) programs in North Carolina, South Carolina, and Georgia, researchers at the University of South Carolina's College of Nursing will share skills, experience and resources to examine the effects of RTR coaches offering a theoretically-based 3-month exercise program among 150 breast cancer survivors to increase moderate-to-vigorous physical activity (MVPA) followed by self-monitoring (i.e. exercise logs) and feedback reports in Months 4-9 (Reach Plus), monthly phone calls from RTR coaches, self monitoring and feedback reports in Months 4-9 (Reach Plus Message) or weekly email/text messages, self-monitoring and feedback reports in Months 4-9 (Reach Plus Message). In this three group study, researchers will assess survivors' exercise, fatigue, mood, quality of life, and self-reported physical functioning at baseline, 3, 9 and 12 months. The costs of the methods vary and data on costs will be collected to guide the selection of maintenance strategies for dissemination. If the results are promising, researchers will proceed with a dissemination trial wherein the large network of RTR volunteers can expand the scope of their services to benefit breast cancer survivors.