plank-on-floor

name	plank-on-floor
description	Holds the character in a plank on the floor, body straight and supported on the forearms. Use when the user says plank, hold a plank, forearm plank on the floor, or plank hold.
category	action
disable-model-invocation	true
subskills	["move-arm","move-torso","balance-and-posture"]

plank-on-floor

Plank hold: posture:"lieFront" with the forearms propping and the body held straight (Spine/Chest neutral). A still hold — keep the duration long.

Recipes / Worked Actions (minified JSON — uses the posture/surfaces contract)

• "hold a plank" -> {"durationMs":1800,"posture":"lieFront","pose":{"LeftUpperArm":[90,0,20],"LeftForearm":[0,0,-120],"RightUpperArm":[90,0,-20],"RightForearm":[0,0,120]},"say":"Holding steady."}