I have noticed they(anti aromatase anyways) help a good bit, but I think it is a nasty way to go about losing fat. I am beginning to see more and more how anti-e's are taken too lightly around the bb'ding world. These are powerful drugs with terrible long term side effects. Calcium depletion is a terrible thing especialy for a bodybuilder. Not to mention further damage to lipid profile and more hair loss. Nolva will not deplete calcium, but I don't know how effective at fat burning it is.Stick with yohimbine, var, ALA, green tea, CKD or low carb diet, cardio.
PG