Since it isn't approved for human use I'd never use it so i can;t comment first hand but reports seem to suggest it acts mostly a diuretic and laxative which, of course, will make you look leaner.
Guys going into competition use a double dose of DEFINITION for 3 days along with extra potassium, go in a sauna for a couple of days prior, take some senna the night before and give themselves an enema the morning of. Leans you right out and makes you cut as a motherfucker -- for a day or two.
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