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Seated forward fold

Target Hamstrings  ·  Equipment Body weight  ·  Level Beginner  ·  Reps 3

Seated forward fold is a beginner-level yoga movement targeting the hamstrings, 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. Fold3s · ease-in-out Hinge forward from the hips over the legs, reaching toward the feet
2. Rise2.5s · ease-in-out Roll back up to a tall seated spine

The .posecode source

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

posecode stretch "Seated forward fold"
  rig humanoid
  pose start = seated

  step "Fold" 3s ease-in-out:
    spine: flex 60
    chest: flex 25
    neck: flex 15
    shoulders: flex 60
    cue "Hinge forward from the hips over the legs, reaching toward the feet"

  step "Rise" 2.5s ease-in-out:
    spine: flex 0
    chest: flex 0
    neck: flex 0
    shoulders: flex 0
    cue "Roll back up to a tall seated spine"

  repeat 3

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