aha! ok - I started with a master cleanse and that really opened my eyes. A water fast is something else though. Due to the total lack of nutrition it is important to understand what you are doing on a deep level. I highly recommend reading the book at the end of my post on this subject. Possibly the most important tips are 'if your hunger returns and does not fade, then it's time to eat - the alternative might be death' (usually after more than 25 days).. and Use as little energy as possible doing anything at all - if you cannot avoid significant emotional upheaval then consider stopping the fast.

https://steemit.com/health/@ura-soul/fasting-as-a-therapy-for-increased-health-and-vitality-lose-fat-strengthen-immunity-heal-and-look-feel-better