Start the day with a bowl of this healthy whole grain. Quinoa contains all nine essential amino acids, making it a complete protein. (Not many cleanses incorporate protein, which can be problematic; if you're not consuming enough amino acids, your body will begin mining them from your muscle tissue. Muscle loss is, unfortunately, one way that detox dieters lose weight.) Quinoa also provides fiber to bulk up stool, and phosphorus to help stimulate bowel movements. The prunes deliver even more fiber, plus sorbitol, a sugar alcohol with a laxative effect.