Demi Moore and Ashton Kutcher Begin Master Cleanse

Hollywood hot couple Demi Moore and Ashton Kutcher are taking on a nutritional challenge together.

The couple both announced on their separate Twitter accounts that they're starting the Master Cleanse. Ashton tweeted: "[Nine] hrs into the master cleanse. I want a steak, a beer, and a blow-pop. Hmmm this is gonna be rough."

Demi sent an update, writing: "[Second] day of master cleanse and off to hike with hubby and the dogs. 2nd day better than the 1st!" In response to some questions from her followers about her reasons for doing the master cleanse, Demi tweeted back "this is for health" and "[I'll] let you know if I make it to day 4."