In this week's episode of Fit Fat Fast, Jon and Debbie discuss Jon’s metabolic crossover test, we talk about what went right, what went wrong and why gym metabolic testers aren't the people you want analyzing the data. We also go over the Maffetone formula, we discuss alternative grains and Metabolic Efficiency and their role in inflammation and gastric distress and talk about choosing the right coach for your goals.  Finally, we talk a long time to discuss the role of Metabolic Efficiency in a vegan diet and give a nod to a very rational line of thought from a vegan listener.