Add Demi Moore and Ashton Kutcher to the growing list of celebrities who have tried the infamous Master Cleanse diet. According to both their Twitter accounts, the couple has been doing the Cleanse for several days--and they're not loving it. The Cleanse consists of drinking a mixture of lemon juice, cayenne pepper and maple syrup and skipping all solid foods.

On Sunday, Moore tweeted, "2nd day of master cleanse and off to hike with hubby and the dogs. 2nd day better than the 1st!" Later in the day, she admitted she might not make it very long, Tweeting to a follower, "let you know if I make to day 4."

The Master Cleanse has long been used in Hollywood as a way to shed some unwanted pounds quickly--though Moore claims that's not why she's doing it. "This is about health!!!" she tweeted to a follower.