Deca really depends on the person, some love it, I fucking HATE IT, I have never felt shittier then when on deca (I've had 2 runs with it in the course of about 7 years) and I feel lethargic, tired, drained, depressed on it, not to mention severe deca-dick (complete lack of sex drive) and excessive water bloat/retention. I will never do this horrible steroid again! though oddly enough I've had favorable results with NPP (nadrolone phenyl propionate - fast acting deca)