"Kim and Ryan Smith have filled a gap in the intermittent fasting world with heart and soul. There are a lot of "experts" out there, and you can find them on YouTube, in various Facebook groups, podcasts, and, increasingly, in the mainstream media. Some are great; some, not so much. This book is different. The authors know readers will find breadth of information elsewhere. They give us depth, in a highly readable, breathtakingly sincere telling of their personal journeys."