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Lines (Shoulders and Hips)

Introduction​

To apply any technique it is first necessary to position yourself correctly in relation to your opponent. This positioning depends on a biomechanical reading of both your own body and your opponent's, starting with the hip line and the shoulder/head line.

Hip Line: The Engine of the Body​

The hip represents the center of the body, separating upper and lower limbs. Because it is one of the body's most mobile joints, it functions as the engine of nearly all movement.

Controlling your opponent's hips (through space filling and weight distribution) limits their mobility. Protecting your own hip line is key to maintaining freedom of movement.

Practical examples:

  • To immobilize: Surpass the legs (guard pass), then fill the opponent's hip line with your trunk, arm, or shin
  • To escape: Creating space along the hip line allows guard recovery or submission attempts
  • In guard: Controlling the opponent's hips lets you manipulate their entire body and access their center of balance

The hips function as a checkpoint — a constant reference for attention and control.

Shoulder and Head Line: The Rudder of the Body​

If the hips are the engine, the head is the rudder, guiding direction and rhythm. Whoever controls the head usually controls the rest of the body.

For controlling the shoulders, an underhook serves as a "window" to the back of the body, allowing you to isolate the opponent's arms and redirect their body axis. However, to reach this level of control, you must first overcome the previous lines (feet → legs → hips).

Relationship Between the Lines​

The body's lines are progressive stages of dominance. Each line you surpass opens access to the next:

feet → legs → hips → shoulders/head

  • Create space when in a defensive position
  • Fill space when pursuing dominance

"He who controls the hips controls movement. He who controls the head controls the fight."