I came across this a year ago and never did it then I decided to give it a shot this week. I have never done a fast of any kind, but thought that this one did not seem all that extreme but will still be challenging.
check it out.
Intermittent fasting is great. Been doing 16 hour fasted with 8 hour feeding windows for over a year now and the mental clarity it gives me is, well, fucking awesome.
Not thinking about food and letting it control my life is extremely freeing. The 5 day program looks like it has no reasoning to it, but fasting is scientifically proven to increase concentration & brainpower and lifespan (in rats).