Human Design
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Centers

The nine centers of the bodygraph: defined and undefined.

What a center is

The centers are the nine geometric shapes of the bodygraph, each in charge of its own area of life: thinking, speech, direction and love, willpower, instinct, emotions, life force, pressure and inspiration. Some centers are motors (they supply energy), others are centers of pressure, awareness or expression.

Defined or open

A defined (coloured) center works consistently — it's what a person can always rely on. An open (white) center takes in and amplifies other people's energy: this is where a person learns and grows wise, but also where they are most easily conditioned. Neither is better — they are simply different ways of living.

Head

Inspiration, questions, mental pressure

Body: The pineal gland

Defined: A constant source of inspiration and your own questions. You think steadily in a particular direction and inspire others.

Undefined: You pick up other people's thoughts and questions. It's important to tell which questions are truly yours and not try to answer them all.

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Gates: 61, 63, 64

Ajna

Conceptualizing, ideas, beliefs

Body: The pituitary gland, anterior and posterior

Defined: A consistent way of thinking and processing information. You have your own beliefs and hold to them consistently.

Undefined: A flexible mind that can see different points of view. The trap is wanting to seem certain and clinging to other people's beliefs.

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Gates: 4, 11, 17, 24, 43, 47

Throat

Communication, expression, action

Body: The thyroid and parathyroid glands — metabolism

Defined: A consistent voice and way of expressing yourself. You speak and act in a recognizable, reliable way.

Undefined: Your voice sounds different depending on who's around. The trap is talking to get attention; the strength is sensing when the right moment comes.

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Gates: 8, 12, 16, 20, 23, 31, 33, 35, 45, 56, 62

G center

Identity, direction, love

Body: The liver and the blood

Defined: A steady sense of self and of your direction. You know who you are regardless of your surroundings.

Undefined: Identity and direction change with your environment. What matters most is the right place and the right people: with them you feel you're on your path.

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Gates: 1, 2, 7, 10, 13, 15, 25, 46

Heart (Ego)

Willpower, self-worth, the material world

Body: The heart, stomach, gall bladder and thymus gland

Defined: Consistent willpower. You can make promises and keep them, but you need rest after the effort.

Undefined: No consistent willpower. The trap is proving your worth and promising too much; the wisdom is understanding there's nothing to prove.

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Gates: 21, 26, 40, 51

Spleen

Intuition, health, survival, fears

Body: The spleen and the lymphatic system — immunity

Defined: Steady intuition and a sense of safety, a strong immune system. You instantly sense what's good for you.

Undefined: Very sensitive to health and to other people's state. The trap is holding on to what's already harming you out of fear of losing security.

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Gates: 18, 28, 32, 44, 48, 50, 57

Solar Plexus

Emotions, feelings, the emotional wave

Body: The kidneys, bladder, pancreas, prostate and the nervous system

Defined: Your own emotional wave that rises and falls in cycles. Clarity comes with time, not in the moment.

Undefined: You amplify other people's emotions. The trap is avoiding conflict and truth to keep the peace; the gift is deep empathy.

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Gates: 6, 22, 30, 36, 37, 49, 55

Sacral

Life force, work, sexuality

Body: The ovaries and testes — sexual energy and fertility

Defined: A powerful supply of energy for work and life, restored by sleep. It works best in response to what lights you up.

Undefined: No consistent energy engine. The trap is not knowing when enough is enough and overworking; it's important to lie down and rest before you're exhausted.

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Gates: 3, 5, 9, 14, 27, 29, 34, 42, 59

Root

Pressure, stress, adrenaline, drive

Body: The adrenal glands — adrenaline and the stress response

Defined: A consistent way of handling pressure and stress. You have your own rhythm that pushes you into action.

Undefined: You amplify other people's pressure. The trap is rushing to get rid of the tension sooner; the wisdom is telling real pressure from borrowed pressure.

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Gates: 19, 38, 39, 41, 52, 53, 54, 58, 60