This podcast episode explores the science of flexibility, covering various aspects of how we perceive and improve our limb range of motion to perform everyday tasks and enhance physical performance. It discusses the role of sensory neurons, spinal cord mechanisms, and higher brain areas in regulating flexibility and stretching. The episode also introduces van Economo neurons and their involvement in regulating internal state and motivation for flexibility, as well as practical tips, techniques, and research findings on effective stretching protocols.