Fasting Fasting Mimicking Diet (FMD) Intermittent Fasting Prolonged Fasting Time-Restricted Feeding (TRF) June 26, 20190CommentsFasting Methods: How to Optimize for Your Goals (Part 1)What can you expect during a fast? How exactly does fasting work? Can you eat during a fast? Here we take a look at how the body changes during fasting. by Zach Sellers, PhD.