What do you need to do to prepare to start the master cleanse (preparation - what to eat/drink before)?

I know how to make the drink - just curious to see what you need to do (eat, drink, etc.) before beginning the cleanse.What do you need to do to prepare to start the master cleanse (preparation - what to eat/drink before)?
My girlfriend tried all sorts of different diets and products, most without success. Her friend let her try out a new Acai Berry product she was using and she now swears by it.





Shes lost over 13 pounds already, most of the weight went from her tummy, hips, bottom and thighs. Apparently the Acai Berry flushes all the waste out your system and cleanses your body of toxins and bacteria.





She got her own supply for free too, only had to pay a few dollars for shipping.





Here's their site if you want to check it out: http://tr.im/h5WpWhat do you need to do to prepare to start the master cleanse (preparation - what to eat/drink before)?
Other than preparing yourself mentally, there is nothing you need to do as far as pre-cleanse eating and drinking goes.