The nine centres in Human Design represent different aspects of human experience, from identity and communication to pressure, emotions, and instinct. Each centre is either defined or open in your chart. A defined centre shows where your energy is consistent and reliable. An open centre reveals where you’re more receptive, adaptive, and sensitive to external influences. Centres can explain why some areas of your life feel steady, while others feel more changeable or shaped by your environment. For example, a defined Throat Centre gives you a consistent voice, while an open Emotional Centre can make you sensitive to other people’s feelings. Understanding which centres are active in your chart helps you see where you are most impacted by others and how to manage that influence. This section breaks down each of the nine centres, explaining what it does, how it works when defined or open, and how it plays into decision-making, relationships, and self-awareness. Whether you’re just beginning or diving deeper, learning about your centres gives you clearer insight into your energy dynamics and personal tendencies. It also helps reduce confusion and conditioning, showing you how to trust your own experience more fully.