Each portion of digestion is important to the overall function and goal of the digestive tract. Healthy digestion promotes normal breakdown of foods and nutrients, appropriate amounts of stomach acid, and maintaining a healthy balance of flora (the "good gut bacteria."). All portions of the digestive system are important, however, sometimes one needs to focus specifically on the colon portion. The last section of the GI (Gastroentestinal tract) is the colon. This is where any remaining water and salts are removed by bacteria during fermentation. Then, the resulting material is stored as fecal matter before passing.