I keep reading about it, & it's hard to determine if it "works." Well, what I read today made sense. It "works" to the extent that it amplifies what you're doing in your diet & exercise. A lot of how it works is as a stimulant, giving you energy at the gym so you work harder & burn more, and must suppress appetite too so easier to follow diet. There are a bunch of ingredients that do other things I'm not sure if I believe. They shouldn't call it a fat burner, because no pill seems to burn fat all on its own. If you were at rest & took it, I don't think anything would happen. So I'm trying it again.