"…..the average person has between 2-6lb of unwanted matter stuck to the walls of there bowel which sits there putrefying, creating a source of toxicity, a breeding ground for pathogens and a welcome home for parasites…."
On a water fast after about the 5th day you will stop using your bowels or it will be just liquid. This is the best time to use a colon cleanser. You can get them from pharmacies or health food shops. The one I use is a powder form of magnesium oxide. When mixed with water an consumed it makes large amounts of oxygen. It then reacts to with hydrogen to form water inside the intestinal tract to soften and liquefy the hardened crap. It sounds very technical but trust me it works. Basically you feel like your shitting water but you feel so much lighter and healthier. Just make sure your near the loo if your going to try it! It is also a lot gentler then laxatives and works in a different way. It targets the matter that sits in your bowels blocking it. Everyone has this some worse than others. Other options are Colonic irrigation.