I loved the approach of Bert Herring, how humble he is and how his view about diet is much more than the food we eat. It was very clever to use the acronym D.I.E.T. for "Did I Enrich Today"?
He has a free e-book that talks about fast 5 which is basically a 19:5, 19 hours of fasting and eating within a window of 5 hours everyday. I haven't read the book but I will download it and will check more in detail his website: