As far as the responses in this thread go I disagree, Winny is great, almost no sides, burns fat like crazy, great hardness and fullness, and the strength gain is awesome, never had any joint issues with it. However I have had joint issues with anavar, and eq.
And yes steroids do burn fat, just run tren for 6 weeks and see what happens with no other changes to your diet or training.
Just be cautious to keep the duration of use moderate as winny may be quite harsh on lipids.