This past November I did a 18 day water only fast, I meant to do 40, but Thanksgiving ruined my plans lol. I felt soooooooo great during the 18 days, and started wearing smaller clothes, I had lost about hmmm I think 28 pounds. Unfortunately I gained it back, however I know if I do the 40 this time, I will get to a better weight and start to be happier and want to keep going.