Desk & posture · Core

Seated torso twist

Target Obliques  ·  Equipment Chair  ·  Level Beginner  ·  Reps 3

Seated torso twist is a beginner-level desk & posture movement targeting the obliques, written in Posecode, a small open-source language that capable language models can use to describe human movement as text. Authored joint targets and reach-IK solves are constrained to Posecode's configured per-axis bounds. Those bounds constrain the visualization, but they do not certify that a complete movement is safe or clinically correct. This page documents a code example; it is not exercise instruction.

Movement phases

Phase cues are display-only coaching text. The executable joint and contact directives in the source below determine the animation.

1. Twist right2.6s · flow Sit tall, then rotate the ribs and gaze to the right
2. Twist left3s · flow Pass through center and rotate to the left
3. Center1.8s · settle Unwind back to a tall, neutral seat

The .posecode source

This is the exact text used by the linked playground animation: phases and joint angles, not 3D transforms.

posecode stretch "Seated torso twist"
  rig humanoid
  pose start = seated

  step "Twist right" 2.6s flow:
    spine: twist-right 35
    chest: twist-right 30
    neck: twist-right 40
    shoulders: abduct 30
    elbows: flex 45
    cue "Sit tall, then rotate the ribs and gaze to the right"

  step "Twist left" 3s flow:
    spine: twist-left 35
    chest: twist-left 30
    neck: twist-left 40
    shoulders: abduct 30
    elbows: flex 45
    cue "Pass through center and rotate to the left"

  step "Center" 1.8s settle:
    spine: twist-left 0
    chest: twist-left 0
    neck: twist-left 0
    shoulders: abduct 0
    elbows: flex 0
    cue "Unwind back to a tall, neutral seat"

  repeat 3

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