I wonder if your body is desperately trying to get rid of something in your diet (like organophosphates?) - have you also tried regular saunas?

It helps draw more toxins out as the fat is metabolized. Trying to increase glutathione levels is helpful for removing toxins from the body. There are a number of tests like the Ion Panel Test and Mycotoxin tests that require preparation like this to identify metal and mold levels. Generally dry fasting 12 - 16 hours is a good start. Muslims do this during Ramadan and have for a long time. While lacking a microscopic perspective, I suspect that most of them feel better.