Dif....I've found that Water Fasting is very easy on a full stomach. In fact, conquering the World is not out of reach. It's after the 24-hour mark into the Fast that things start to come apart, and Crow must be eaten.
I've found it's best not to tell what you're going to do, but rather what you've done.....WY
P.S. Good Luck on your journey. Billy Graham, from his Christian viewpoint, knew that a public confession was the correct beginning. You've done that.