| name | plank |
| description | Holds a stylized plank, hinged forward over the hands with the body long and feet on the toes. Use when the command mentions plank, hold a plank, plank position, or front hold. |
| category | exercise |
| disable-model-invocation | true |
| subskills | ["move-arm","move-torso","balance-and-posture"] |
Plank
A held plank, stylized for an upright rig: hinge the torso forward toward
horizontal, support on the arms, and balance on the toes.
How
- Torso long and forward:
Spine:[80,0,0], Chest:[10,0,0]; head neutral with
the body (Neck:[-20,0,0],Head:[-15,0,0]).
- Arms support down to the floor:
*UpperArm:[120,0,0] with a slight elbow set
(LeftForearm:[0,0,-20],RightForearm:[0,0,20]).
- Legs straight, up on the toes:
*Foot:[60,0,0]. Slight root.y:-0.1.
- Static hold — a
pose with a longer durationMs.
Example
- "hold a plank" ->
{"durationMs":1500,"say":"Holding the plank.","pose":{"Spine":[80,0,0],"Chest":[10,0,0],"LeftUpperArm":[120,0,0],"RightUpperArm":[120,0,0],"LeftForearm":[0,0,-20],"RightForearm":[0,0,20],"LeftFoot":[60,0,0],"RightFoot":[60,0,0],"Neck":[-20,0,0],"Head":[-15,0,0]},"root":{"y":-0.1}}
