Mobility · Upper legs

Standing quad stretch

Target Quadriceps  ·  Equipment Body weight  ·  Level Beginner  ·  Reps 2

Standing quad stretch is a beginner-level mobility movement targeting the quadriceps, 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. Catch the foot3s · flow Turn slightly right, draw the heel toward the seat, and catch the ankle
2. Release2s · settle Release the foot and return to standing

The .posecode source

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

posecode stretch "Standing quad stretch"
  rig humanoid
  pose start = standing

  step "Catch the foot" 3s flow:
    spine: twist-right 15
    chest: twist-right 10
    knee_right: flex 144
    hip_right: extend 20
    shoulder_right: extend 35
    elbow_right: flex 20
    elbow_right: supinate 80
    reach: hand_right ankle_right
    pin: foot_left floor
    cue "Turn slightly right, draw the heel toward the seat, and catch the ankle"

  step "Release" 2s settle:
    spine: twist-right 0
    chest: twist-right 0
    knee_right: flex 0
    hip_right: extend 0
    shoulder_right: extend 0
    elbow_right: flex 0
    elbow_right: pronate 80
    pin: foot_left floor
    cue "Release the foot and return to standing"

  repeat 2

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