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