yeah...im just wondering what those diet pills ( zantrex, hydroxcut, stacker ) if they can all even be put in the same category, im just wondering how they actually help burn fat. or if thats what they do. can anybody tell me exactly what they do, like raise your heart beat? give you energy to excercise more and thus burn more calories? or what? whats the deal with them..ive walked through the store and looked at the ingredients, stupid root extracts and other crap. i wonder how the hell that can in anyway aid you in burning fat...but if they can...just wondering