The Placebo effect does wonders for folks who think they are really on something potent.
Winny tabs only is a waste of money. 10lbs. of muscle on Winny tabs only?
Bullshit.
If you even got 5 lbs of solid gains you were prolly working out harder than ever thinking you were jacked.
Starbux will do that to ya. 
thats a good point,......you got these guys, havent lifted in months, eating shitty.......then they take a few winny tabs, drink a couple of shakes a day, and actually work out.........then they atribute the few lbs. they gained to the drug..............if you havent been working out, and gettting your meals in for months on end..,,,,,,,,,,,you probably would have gained that weight without the winnny tabs