all depends. my first cycle was a stupid one, deca 600 a week for 12 weeks with winny at the end, no test. i never got deca dick. however, my last cycle was test 500 and deca 600 for 12 weeks. i never got deca dick but at the end of the cycle i could not ejaculate even after a good hour of drilling. though it stayed hard that was the problem. that is normally what happens, nandrolone builds up progesterone and prolactin which will cause inability to bust a nut. i hear these guys saying deca made them limp as a noodle, i did not experience this but i would get some proviron and cialis if this is the case.