Sustaining Physical Activity After Cancer Exercise Sessions

The goal of this clinical trial is to develop and test an adaptive physical activity (PA) maintenance intervention for cancer survivors, after participating in a community-based exercise oncology program. The main questions it aims to answer are: * Aim 1: Examine the feasibility and acceptability of the intervention among cancer survivors and community partners. The researchers will utilize quantitative surveys, focus groups, and semi-structured interviews to collect information about feasibility, implementation, adaptation, and sustainability. * Aim 2: Examine the effects of the intervention among cancer survivors. The researchers will compare the proportion of participants achieving the exercise guidelines for cancer survivors six-months following completion of the initial exercise program. Participants will participate in a community-based exercise oncology program and then return to three months of free living. Based on the PA measured at the three-month follow-up, participants will be categorized as a "Responder" or "Incomplete Responder", and then randomized to the PA maintenance intervention. Researchers will compare those that are classified as Responders (meeting exercise guidelines for cancer survivors) and Incomplete Responders (not meeting guidelines for cancer survivors) to see what level of intervention is needed to influence sustainable behavior change in this population.