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Dead hang
Dead hang is a beginner-level fitness movement targeting the lats, 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 Dead hang in the playground →How to do it
- Reach0.8s · ease-out Reach up and grip the bar
- Hang3s · ease-in-out Relax into a long, straight-arm hang
- Down1.5s · ease-out Drop down off the bar and shake out the arms
The .posecode source
This is the exact text an LLM writes to produce the animation above: phases and joint angles, not 3D transforms.
posecode exercise "Dead hang"
rig humanoid
prop bar
pose start = standing
step "Reach" 0.8s ease-out:
shoulders: flex 175
elbows: flex 5
ground-lock: feet
cue "Reach up and grip the bar"
step "Hang" 3s ease-in-out:
shoulders: flex 175
elbows: flex 5
pin: hands bar
cue "Relax into a long, straight-arm hang"
step "Down" 1.5s ease-out:
shoulders: flex 0
elbows: flex 0
ground-lock: feet
cue "Drop down off the bar and shake out the arms"
repeat 3