When I did my first Master-Cleanse I felt so good by day ten that I kept going one day at a time. I did not want to stop. You got through the roughest part, the rest is easy. I reached a point around day 14 where I felt great mental clarity and very low stress and anxiety. It made me wonder if people who have problems with depression may benefit greatly with the MC. Currently I am on day 11 and this is my 3rd time around. My second time was just ten days and it wasn't nearly as good as my first time which was 3.5 weeks.