Did it once a long, long time ago back in my 20's when I knew very little about AAS. Needless to say, libido was shot to hell and took quite a while for it to return. FYI, back then my libido was raging 24/7 too. Pretty much walked around with an erection all day long. But when I tried deca alone I couldn't get hard to save my life. This was actually ok because back then women were constantly trying to rape me.