Burnett1948. I have been told by my Radiation Oncologist that the best way to keep my PSA down is to exercise to the point of exhaustion. My PSA had just rose from 2 to 2.5 during the last 6 months. I have recurring PCa. My doubling is still 18 months. She told me exercise would be better than me taking Turmeric, Pomegranate, Green Tea and Broccoli daily. My reason for posting this question is to find out what exercise others are doing?.