Mobility · Upper legs
Standing quad stretch
Standing quad stretch is a beginner-level mobility 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.
▶ Open Standing quad stretch in the playground →How to do it
- Catch the foot3s · ease-in-out Bend the right knee back and reach the hand for the ankle
- Release2s · ease-out Release the foot and return to standing
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 "Standing quad stretch"
rig humanoid
pose start = standing
step "Catch the foot" 3s ease-in-out:
knee_right: flex 144
hip_right: extend 20
reach: hand_right ankle_right
cue "Bend the right knee back and reach the hand for the ankle"
step "Release" 2s ease-out:
knee_right: flex 0
hip_right: extend 0
cue "Release the foot and return to standing"
repeat 2