Basically, it takes 6 to 8 months to re-engineer the cells, and then you can either choose to drink or not drink. If when you loose your weight and then immediately stop drinking it, since the cells are not totally re-engineered, your fat cells will recall. It's not the problem of the product, but actually our cells really need 6-8 months to be re-engineered. It helps you not only to keep fit, it really can improve your health and look much better than before. I have tried and the result is absolutely incredible. My company's colleagues get surprise why I can loose weight so efficiently without paying a lot of money or taking medicine which are not worth and harmful to our health.