BB, I am three months out from SRT and haven't had any problems yet. My RO encouraged me to exercise daily because the increased blood flow would help heal tissue damaged by the radiation. My primary care doc said I would need to do Kegels the rest of my life. She pointed out that all men and women lose muscle mass as they get older and the only way to prevent it is with exercise. So, I try to get a brisk 5k in daily and do Kegels and other pelvic floor exercises on a regular basis. You younger guys can probably get away with doing nothing, but at 74, I don't have any room for error.
Dx 2/2008, at age 71, PSA 9.1, G8, T1c
daVinci surgery 5/2008, G8(5+3), pT2c
BCR 2 1/2 yrs after surgery
IMRT, 68.4 Gy, 12/2010 - 2/2011
PSA 0.07 three months after IMRT