When I first heard my friend was doing the master cleanse and losing weight at a rapid rate I had the typical responses: "She will gain it all back," "It's not healthy," and of course the "That is SO stupid of her!" But then a month went by, she hadn't gained it all back, in fact, she had lost more. She had completely changed her eating habits AND her relationship with food. And I couldn't deny it, she looked GREAT! And I, well, I didn't. Simply put: I was the one left feeling stupid.