Special K is a lightly toasted breakfast cereal manufactured by the Kellogg Company. The cereal was introduced to the United States in 1956. It is made primarily from rice and wheat. It is marketed primarily as a low-fat cereal that can be eaten to help one lose weight. It frequently has give-away offers for various health and fitness products or contains dieting information on the back of the box. The diet that Special K advocates is called 'The Special K Challenge.' The goal of 'The Special K Challenge' is to lose 6 pounds in 2 weeks. The diet is as follows: For meal number one you may have a serving of any Special K Cereal with 2/3 cup skim milk and fruit. For meal number two you may have a Special K Protein Meal Bar, a Special K Protein Shake, or another serving of Special K cereal with 2/3 cup skim milk and fruit. Meal number three can be eaten normally.