The master cleanse (as the lemonade diet was originally known) is basically a juice fast. For a period of 7-10 days normally--though it can be more--you drink 60-80 oz of a special lemon juice drink throughout the day. In the morning, when you first wake up, you drink a mixture of lukewarm water and sea salt to begin the internal flushing process. At night, you drink a cup of herbal laxative tea to help encourage the expulsion of the toxins that have collected in your body. Master cleanse experts recommend you stay near a bathroom for around an hour after drinking the salt water and the tea... if you know what I mean!