EMBRACE: Exercising Together

PRIMARY OBJECTIVE: I. To test the effectiveness and mechanisms of the adapted Exercise Together intervention on mental and physical health of couples (Aims 1 \& 2). SECONDARY OBJECTIVE: I. To gain better understanding of the implementation context and implementation outcomes (Aim 3). OUTLINE: Patients are randomized to 1 of 2 arms. ARM I: Patients and partners undergo Exercising Together exercise program during radiation therapy on study. Patients also undergo collection of blood samples throughout the trial. ARM II: Patients and partners receive educational materials specific to exercise. Patients also undergo collection of blood samples throughout the trial.