Variable · the body side

The Primary Health System

PHS is the body half of the Variable: Determination, the conditions under which your body is designed to take in food, and Environment, the surroundings in which it meets the least resistance. The other two Transformations, Perspective and Motivation, belong to the mind and are covered by Rave Psychology instead.

It is the layer most people skip on the way to Type and Authority, and it is the one that answers fastest. Strategy and Authority run on the body's clock and take years to prove out. Change the sound level you eat in and you can have an answer this week.

Where it comes from in the chart

Both PHS arrows sit on the Design side, the red side, the part of you that was already running before you were born. They are read from Tone rather than from gates, lines or centers, which is why you cannot work them out by looking at the bodygraph. See Substructure for how Tone is calculated, and Variable for all four arrows together.

TransformationRead fromGoverns
DeterminationDesign Sun and EarthHow the body takes in food
EnvironmentDesign NodesWhere the body is correct to be

Determination: the six conditions

Determination is sometimes called Digestion, and that name describes the work better. It says almost nothing about which foods are correct for you and a great deal about the conditions you eat in. Your chart puts you on one side of each of these six pairs.

ConditionWhat it decides
AppetiteConsecutiveAlternatingOne thing at a time, or variety across the meal
TasteOpenClosedSampling widely, or staying with the familiar
ThirstHotColdWarm food and drink, or cool
TouchCalmNervousStillness while eating, or some stimulation present
SoundLowHighQuiet surroundings, or noise and conversation
LightDirectIndirectDaylight on the food, or dimmer, softer light

This is why two people can eat the same healthy meal and get different results from it. The food was identical. The conditions around eating it were correct for one of them. Eating against your Determination puts real stress on digestion even when what is on the plate is beyond reproach. There is more detail in the piece on digestion type.

Environment: the six places

Determination governs nourishment taken in through food. Environment governs nourishment taken in from the outside world: the stimulation, the conditions, the social weather of a place. In your correct environment you meet the least resistance available to you, which shows up across health, relationships and how much of everything else works.

EnvironmentThe quality of the place
CavesEnclosed, contained, with the entrance in view
MarketsMovement and exchange, other people passing through
KitchensWhere things are made, warm and in process
MountainsElevation, distance, a view over the rest of it
ValleysHeld between higher ground, sheltered
ShoresAn edge, where one element meets another

Why this one moves first

Ra was direct about the fact that some people cannot afford to wait out seven years of natural deconditioning, and that for them a correct dietary regimen is the bedrock the rest of the transformation sits on, because so much of what is in the way is stored in the body rather than the mind. His full remarks are quoted in the importance of PHS. The practical version: if Strategy and Authority feel like theory to you, PHS is where the system stops being theory, because your own digestion reports back inside a week.

How to start

  1. Get the mechanics. Determination and Environment come from Tone, which no chart calculator prints on the bodygraph itself. Run your chart, then read Variable to find your four arrows.
  2. Change one condition. Not six. Pick Sound or Light, hold it for two weeks, and pay attention to digestion, energy and how you feel an hour after eating.
  3. Let the body report. The test is not whether the theory is satisfying. It is whether something measurable changed.
  4. Leave Environment until later. Especially before your Saturn Return. Notice whether you are meeting more resistance than ease where you are, and let that sit.

Ra Uru Hu on this, in his own voice

7 recordings from the Jovian Archive, played through SoundCloud. Nothing loads from SoundCloud until you press play.

  • Environment and Differentiation Aligning to Your Environment · 2 min SoundCloud
  • PHS and the Awakening of the Body 1 min SoundCloud
  • Being Right 3 min SoundCloud
  • Environment: Design External PHS and the Awakening of the Body · 3 min SoundCloud
  • Change Your Environment: Take Control of Your Health Radical Transformations · 3 min SoundCloud
  • Being Right: The Power of the Right Environment 4 min SoundCloud
  • The Transformation of the Form PHS and Awakening the Body · 6 min SoundCloud

Common questions

What is the Primary Health System in Human Design?

The Primary Health System, usually shortened to PHS, is the body half of the Variable. It covers two of the four Transformations: Determination, which is how your body is designed to take in food, and Environment, which is where it is designed to be. The other two Transformations, Perspective and Motivation, belong to the mind and are covered by Rave Psychology rather than PHS.

Where does PHS come from in the chart?

From the two arrows on the Design side of the bodygraph, the red side. Determination is drawn from the Tone of your Design Sun and Earth; Environment is drawn from the Tone of your Design Nodes. Both are Variable mechanics, which means they are read from Tone rather than from gates, lines or centers.

Is PHS about which foods to eat?

No. Determination says almost nothing about which foods are correct and a great deal about the conditions you eat in: the sound level, the light, whether you eat one thing at a time or several, whether your surroundings are still or busy. Two people can eat an identical healthy meal and get different results from it because the conditions around the meal were correct for one of them and not the other.

How long does PHS take to show results?

Faster than most of the system. Strategy and Authority ask for months or years before the evidence is undeniable, because deconditioning runs on the body’s own clock. Eating in the sound and light conditions your Determination specifies tends to produce a felt difference within days. That is what makes PHS a reasonable entry point for someone who wants something testable early.

Should I move to my correct Environment?

Not as a decision made from reading a label. Environment is something you move toward through Strategy and Authority over real time, and it generally matters more after the Saturn Return, around ages 28 to 30. Discovering you are correct for Shores is not an instruction to relocate to the coast, and treating it that way is the most common mistake with this Transformation.

Is PHS a reading or a practice?

A practice. You can have the mechanics decoded for you in a session, and that is worth doing because the Tone calculation is not something you can eyeball. But the value is in the experiment that follows, run over months on your own body, not in the hour where someone tells you your Determination. PHS is process work, and anyone selling it as a one-off answer is selling the wrong thing.

The PHS and Variable articles

Everything written here on Determination, Environment, cognition and the four Transformations, newest first.

15 more in the archive. Browse Health & The Body for the rest.