Works with Claude, ChatGPT, Gemini, or your own local model: paste this prompt and your AI will co-facilitate this exercise with you.

Help me prepare and run the exercise below. First ask for my participant count, time, setting, access needs and intended result. Check these against the stated limits. Use the supplied rules and materials. Explain any proposed changes before using them, and label them as adaptations. Do not invent source claims or require personal disclosure. Give me one step at a time when I say start. I manage the people, physical activity and clock; do not claim to observe the room. Ask me what happened before choosing a next step.

Reference revision: 83237ebd6f4811951e195e11cd6b5138beaef71222c528840f386f0915f1af00

# Keystone

Participants form a shoulder-to-shoulder circle and lean inward together, slowly sliding their feet backward to hold a balanced ring of mutual physical support. Afterward, the group analyzes how shared reliance and individual adjustments affected stability.

**Time:** 15 minutes. UWT suggested duration; Playmeo does not specify an exact running time.
**People:** 6 to 16. Single circle of 6 to 16 participants facing inward.

## Choose this exercise

**Purpose:** Demonstrate mutual physical interdependence by holding a stable circle supported solely by inward leaning.
**Use it when:** Use during in-person team workshops when exploring interdependence, mutual support, or how small individual adjustments influence whole-group balance.
**Skip it when:** Skip if participants prefer not to engage in physical contact, if the floor surface is slippery, or if participants have physical mobility, spine, or balance limitations that make leaning unsafe.

## Materials and tools

- Non-slip indoor flooring or dry flat grass

## Before participants arrive

1. Clear an open area free of tables, chairs, or tripping hazards.
2. Confirm the floor surface offers good foot traction.

## Say this to open

We are going to explore physical balance and interdependence in a circle. You will touch shoulders with the people beside you and lean slowly into the center. Safety comes first: move slowly, communicate clearly, and step back or release whenever you need to. Anyone who prefers not to lean can serve as an outside spotter to track alignment.

## How to run it

### 1. Set posture and opt-in (3 minutes)

Gather the group into a close circle facing inward. Ensure everyone is standing shoulder to shoulder with neighboring participants lightly touching shoulders. State the opt-out option: anyone who does not want to lean can step outside to observe balance lines. Participants keep their feet flat and body straight.

### 2. Initial inward lean (3 minutes)

Direct everyone to keep their feet stationary and slowly lean their upper bodies into the center, pressing gently against their neighbors' shoulders. Hold for 5 seconds to test whether the ring supports equal pressure. If someone feels unsteady, the group steps back upright.

### 3. Step back and balance ring (5 minutes)

Instruct participants to slide their feet backward by one to two inches at a time while maintaining the inward lean and straight spine. The objective is to form a self-supporting dome where every participant relies on neighbor pressure. Pause between small adjustments. If the circle breaks, participants step forward to recover, discuss adjustments, and retry.

### 4. Debrief stability and support (4 minutes)

Bring the group back upright. Gather in a relaxed circle or seated arrangement. Ask two reflective questions. Take 3 to 4 spoken responses across the room.


## Debrief questions

- What happened to your balance when one person adjusted their stance or pressure?
- What verbal or nonverbal cues helped the ring stay stable as feet moved back?
- How does this dynamic compare to shared responsibility on our team projects?

**Finished output:** Completion of at least one group leaning attempt followed by identified team behaviors that maintain balance.

## Remote

This activity requires direct physical contact and cannot be run online. As a remote alternative exploring mutual reliance, run an interdependence estimation task where participants take turns guessing project constraints while depending on prior inputs.

## Hybrid

Hybrid delivery is not recommended. If attempted, remote participants can act as observers via camera, analyzing the circle's alignment and giving feedback on balance lines after each attempt.

## Access and participation choices

- Participants may choose an active spotter or alignment observer role outside the circle without explanation.
- Any participant can step forward or disengage immediately if they experience discomfort, pain, or instability.

## If the session gets stuck

**Participants bend at the waist rather than leaning with a straight body.**

Pause the group. Remind everyone to keep hips straight and ankles hinged, treating their body as a single rigid plank.

**One side of the circle pushes harder than the other, causing collapse.**

Ask the group to reset. Have them establish equal, gentle contact at the start before moving feet backward.


## Terms used here

- Spotter: An outside participant who watches the structure to warn of slips or balance failures.

## Sources and adaptation

Observed in Playmeo library entries attributed to Mark Collard.

Retained the core Playmeo mechanic of an inward-leaning shoulder circle with feet sliding backward. Added safety boundaries, explicit opt-out spotter roles, strict non-slip surface requirements, precise timing, and structured debrief prompts.

[Playmeo](https://www.playmeo.com/activities/trust-building-games/keystone)

[Playmeo](https://www.playmeo.com/activities/trust-building-games/keystone/)

Current run sheet: https://unitedwetransform.com/exercises/keystone-challenging-trust-building-group-initiative/