This podcast episode explores the concept of polyvagal theory and its relevance in the yoga and movement worlds. The theory focuses on the role of the vagus nerve in emotion regulation, social connection, and trauma. It reframes the understanding of the nervous system and proposes a third response called immobilization or shutdown. The episode provides valuable insights into the structure and function of the central and peripheral nervous systems, the dynamics between the sympathetic and parasympathetic nervous systems, the complexities of measuring vagal tone and heart rate variability, and the integration of polyvagal theory in the yoga community. It emphasizes the importance of understanding the complexity and nuances of the nervous system and offers practical strategies for practitioners and teachers to engage the nervous system in their practices.