Please look for "The Science of Fasting" on youtube. My closest friends make fasts of 21 days in a row and I know a person who has done 40 days in a row. I have done several 3 or 4 days and 2 of 8 days, only water, day and night. Every day I do a fast of 16-18 hours and then I eat as healthy as possible although sometimes I give space to temptations. I produce my own probiotics in vegetables, fruits and prepare my own kombucha in addition to enjoying a good superfood cupboard for my daily shake. It is a process that begins by accepting that 76% of our body is water and that the "hydraulic" system is not properly coordinated or maintained. I purify water daily that allows me to obtain 1000% pure water (steampure), I use sauna three times a week, I take 40 minutes a day of sun and I sleep like a baby. Oh and of course, I work as few hours a week as possible.