RecruitingPhase 2Clinical trialEMBRACE: Exercising TogetherThis phase II trial tests how well an exercise intervention, Exercising Together, works in preventing declines in physical and mental health in couples during radiation treatment for cancer. Treatments for cancer can cause side effects such as fatigue as well as strain on relationships. Exercising Together is a partnered exercise program that adds communication, collaboration and support between partners during exercise to fortify the relationship and amplify the benefits of physical training. Exercising Together program may be effective on the mental and physical health of couples during radiation treatment for cancer.