In this episode of fast physiology on the Critical Oxygen Podcast, Dave Schell and I discuss the importance of a warmup and how to do it correctly. We emphasize that a warmup is not just about getting physically warm, but also mentally prepared for the workout or race. We discuss the physiological changes that occur during a warmup, such as increased blood flow to the muscles and the release of stress hormones that increase heart rate and a number of other physiological processes. We also highlight the importance of individualizing the warmup and finding what works best for each athlete.