You already have this. It is called paristalsis or "cleansing waves". Meal spacing (going 4 hours at least between meals and long break overnight) will support the body's natural cleansing mechanisms, as well as following a candida and SIBO friendly diet (put your gas producing microbes on a diet). Dr. Mc Combs work as well as the work of Norm Robillard , author of Fast Track Digestion:IBS, have really helped in this regard. Also chewing your food VERY well. And time. Time and patience in implementing all of these pro-digestion strategies.