Feasibility of a Walking Program for Cancer Survivors Receiving Radiation Therapy

All subjects will be prescribed a low-intensity walking program based on their current activity level and an daily assigned step count goal (with the current physical activity recommendations of 30 minutes of moderate-to-vigorous activity per day or 150 minutes per week as the ideal goal). Participants will be provided with face-to-face counseling and written material describing their specific individualized walking program. Participants will also be instructed to maintain their normal activities as much as possible during the intervention period. Participants will be given a pedometer and instructed to wear it at least 5 days per week for the duration of the study.