From Fitness Attitudes:
The Lemonade Diet is more of a juice fast, or a body cleanse, or detox since you're living on lemonade for the entire time. You're not eating food of any kind - not even soup. The diet was created to help rid your body of toxines that build up when you don't exercise or eat right. It's designed to help clear and clean your body's digestive tract, kidneys, and liver, while carrying out all the bad stuff that's settled in over time. This version is the first release on CNET Download.com.