In this episode of the Critical Oxygen Podcast, Dave Schell and I discuss lactate and debunk some common misconceptions. We start by talking about how lactate is produced by muscles during exercise, and created to a greater extent when carbohydrate breakdown outstrips the rate at which oxygen can be used in the mitochondria. Lactate does not cause fatigue and actually serves as a beneficial fuel for the body. If you are going to measure lactate for your training please ensure repeated measurements!