We also discussed that certain steroids may indeed stimulate and act at the height of the progesterone receptor including nandrolone and Norethandrolone. These hormones are also altered by it inducing a decrease in libido and a sense of lethargy and such, and eventhough they aromatize in lesser rates than some other steroids, they show an equal capability to cause estrogenic side-effects, particularly when stacked with other aromatizable compounds.

thats a excerpt from the winstrol drug profile on http://www.bodybuilding.com/fun/catwinstrol.htm

I dont really understand it. is that saying winstrol will cause a weaker libido. i thought for most AS except deca you would get an increase in sex drive.