Fitness · Upper legs

Wall sit

Target Quadriceps  ·  Equipment Wall  ·  Level Beginner  ·  Reps 4

Wall sit is a beginner-level fitness movement targeting the quadriceps, written in Posecode, a small open-source language that LLMs like ChatGPT, Claude, and Gemini can write to describe human movement as text. Every joint angle below is hard-clamped to a safe range of motion.

How to do it

1. Slide down2.5s · ease-in-out Slide the back down the wall until the thighs are parallel
2. Hold & rise2.5s · ease-out Press through the heels and slide back up the wall

The .posecode source

This is the exact text an LLM writes to produce the animation above: phases and joint angles, not 3D transforms.

posecode posture "Wall sit"
  rig humanoid
  prop wall
  pose start = standing

  step "Slide down" 2.5s ease-in-out:
    hips: flex 90
    knees: flex 90
    ankles: dorsiflex 12
    shoulders: flex 80
    ground-lock: feet
    cue "Slide the back down the wall until the thighs are parallel"

  step "Hold & rise" 2.5s ease-out:
    hips: flex 0
    knees: flex 0
    ankles: dorsiflex 0
    shoulders: flex 0
    ground-lock: feet
    cue "Press through the heels and slide back up the wall"

  repeat 4

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