Exercise Therapy in Cancer Patients Who Are Recovering From COVID-19

Inclusion Criteria: * Age ≥ 18 * Previously admitted to a hospital for Covid-19 * Discharged from hospital for at least 30 days * Previously treated for cancer at MSK * Interval of ≥ 12 months but ≤ 10 years following completion of primary non-hormonal anti-cancer therapy (current endocrine therapy and maintenance therapy allowed) * Space to house a treadmill at personal residence * Cleared for exercise participation as per screening clearance via the Physical Activity Readiness Questionnaire (PAR-Q+) * Performing less than 90 minutes of structured moderate-intensity or strenuous-intensity exercise per week, as evaluation by self-report * If a female of child-bearing potential, must not be pregnant or planning to become pregnant during the study. * Women \<50 years old who are of child-bearing potential must have a negative pregnancy test within 14 days of enrollment. Exclusion Criteria: * Currently receiving home oxygen after discharge * Enrollment onto any other interventional investigational study * Current treatment for any other diagnosis of invasive cancer of any kind * Distant metastatic malignancy of any kind * Receiving non-hormonal anticancer therapy * Any other condition or intercurrent illness that, in the opinion of the investigator, makes the subject a poor candidate for study participation