I read a story about fasting in a magazine a couple of years ago. In it, after fasting for several days and subsiding on liquid and a special broth, to “clean the imputities out,” the faster is to mix an exact amount of sea salt with water and down it quickly.
Supposedly, the mixture mimicks the internal weight of a human, and as such makes its way straight down everything without a belly stop at all. It then comes out the anus.
According to the article it worked, and but was that a yucky mess of stuff in his intestines… I wonder if regular salt would have achieved the same desired results?