Ok 52 year old male, I have been diag with an enlarged prostste but psa has been normal .99 I have started hybrid biking everyday about 20 miles a day. Any of you guys know if this can/will cause prostate cancer or a rise in my psa ?? I do have some discomfort in the area after several days riding and I have a good seat with the cutout. Also have started to notice some slight erectile problems. Any advise or help is appreciated