A Study on the Effects of Exercise Therapy on Signs of Prostate Cancer

Inclusion Criteria: * Age ≥ 18 * Men with histologically confirmed localized prostate cancer undergoing active surveillance. * Inactive, defined as not meeting the national exercise guidelines for cancer patients (\<150 minutes/week of moderate or vigorous exercise)43 as assessed by remote activity and heart rate tracking for a 7-day period prior to study entry (general physical activity screening assessment via smart watch). * Screening clearance by an MSK Exercise Physiologist (i.e., review of ECG) * BMI \<40 kg/m\^2 * Cleared for exercise participation as per pre-screening clearance via the Physical Activity Readiness Questionnaire (PAR-Q+) (Appendix B) Exclusion Criteria: * Enrollment in any other program that may alter the impact of exercise on tumor outcomes (e.g., weight loss program) * Any neoadjuvant anticancer treatment of any kind for prostate cancer in the last 5 years * Any history of systemic anticancer therapy in the last 15 years * Distant metastatic malignancy of any kind * Any other condition or intercurrent illness that, in the opinion of the investigator, makes the subject a poor candidate for study participation