Feasibility Testing of a Dyadic Exercise Program for Patients Undergoing Thoracic Radiotherapy and Their Family Caregivers

Inclusion Criteria: * Be diagnosed with a non-small cell lung cancer or esophageal cancer and going to receive at least 24 fractions thoracic RT * Have an ECOG performance status of ≤2 * Have a family caregiver (e.g., spouse, sibling, adult child) willing and able (self-identified) to participate in the exercise program Both patient and caregiver must meet all the following criteria: * Be ≥18 years old * Be able to read and speak English * Be able to provide informed consent Exclusion Criteria: * A patient who meets the following criteria will be excluded from participating in this study: * Cognitive deficits noted in the medical records and/or cognitive deficits that would impede the completion of self-report instruments as deemed by the patient's attending radiation oncologist. * Experiences contraindications to exercise as determined by the clinical team * Regularly (self-defined) participates in an exercise program in the year prior to diagnosis A patient and caregiver who is pregnant (medical notes and/or self-identified, respectively) will be excluded.