Frans Bosch’s upcoming book Anatomy of Agility: Movement Analysis in Sport is the most comprehensive text I have seen on human movement and the underlying biological systems that regulate it. It expands on Bosch’s previous book Strength Training and Coordination: An Integrative Approach and goes into a huge amount of detail to explain how complex dynamical systems theory applies to the regulation of change of direction in field sports. Below I hope to explain the key takeaways in the book, where I struggled, and how it will impact my own approach as a strength and conditioning coach.