The Nine Centers of the Human Bodygraph

The human design bodygraph is built around nine energy centers, each of which corresponds to a cluster of biological functions, psychological themes, and energetic qualities. These centers evolved from the seven chakras of the Hindu system but are nine rather than seven — two centers split in the late 20th century, according to the original transmission of Human Design. Each center can be either defined (colored in) or undefined (white) in your chart.

A defined center means you generate a consistent, reliable energy in that domain. People around you experience this energy as a stable field — they can feel it, be influenced by it, and in some cases borrow or amplify it. Your defined centers are your consistent qualities, the reliable aspects of who you are.

An undefined center means you take in and amplify energy from others in that domain. This makes you sensitive and perceptive in that area — you experience a wider range of energies there than defined types do — but it also means you are susceptible to being conditioned by other people's consistent energy. Over time, undefined centers can become sources of wisdom precisely because of the variety of energies you have sampled and learned to recognize.

The nine centers are: Head (mental pressure and inspiration), Ajna (conceptualization and certainty), Throat (manifestation and communication), G-Center (identity, direction and love), Heart/Ego (willpower and tribal drive), Sacral (life-force and sexuality), Spleen (intuition and survival), Solar Plexus (emotion and spirit), and Root (pressure and stress). Your bodygraph, calculated from your birth ephemeris, will show your specific pattern of definition — which is yours alone.

The pattern of defined and undefined centers across the bodygraph determines your type and creates the basic geometry of your design. Looking at your nine centers is the fastest way to understand where you are consistent and where you are not — where you generate and where you receive. It also shows you which areas of life are most likely to be sites of conditioning, because the undefined centers are where other people's consistent energy has the most impact on you.

Practically: to read your own centers, start with the basics — which centers are colored in your bodygraph and which are white. Then read about each defined center to understand what is consistently yours, and each undefined center to understand where you are sensitive and where the conditioning typically operates. This takes the map from abstract to directly applicable to your daily experience.