The previous poster is correct that SparkPeople doesn't recommend any kind of cleanses. Your body is already very efficient at removing toxins, and cleanses can actually do more harm than good. They mess with the balance of healthy bacteria in your system, which can make you sick. The best way to cleanse is through a healthy diet and regular exercise.
Here's an article on this topic I'd recommend reading: www.sparkpeople.com/resource/nutrition_art
Hope that helps,
"You may have a fresh start any moment you choose, for this thing that we call "failure" is not the falling down but the staying down." Mary Pickford