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: 7490210653e40c50fdfaafb1f2210590dad068dfbfdfbd900b78be78bf0b1a70

# Iron Lungs

Participants inhale once, vocalize continuously, and move across an open area until their breath runs out, freezing instantly where they stop. After practice waves, the full group tests their breath control in a combined final run.

**Time:** 10 minutes. Playworks documents this activity at under 10 minutes. A 10-minute slot gives adequate time for staged waves, a group run, and a calm cool-down.
**People:** 4 to 24. Parallel lines across open space, running in waves of 2 to 4 people followed by a whole-group run.

## Choose this exercise

**Purpose:** Practice breath pacing and release physical energy through a structured movement game.
**Use it when:** Use in large outdoor spaces, gyms, or high-energy physical warm-ups where shouting and running fit the setting.
**Skip it when:** Skip in noise-sensitive venues, carpeted conference rooms, cramped indoor areas, or when the group needs a calm, seated focus.

## Materials and tools

- Floor tape, chalk, or cones to mark the start line and opposite boundary
- Whistle or hand bell for facilitator start signals
- Stopwatch or phone timer (for facilitator and remote participants)

## Before participants arrive

1. Select an open, level area free of hazards, at least 20 to 30 meters long.
2. Mark a clear starting line with tape or cones, and mark a visible boundary on the far side.

## Say this to open

Line up along the starting mark. Today we are testing breath pacing with Iron Lungs. On your turn, take one deep breath and start yelling or humming on a continuous tone while moving toward the far boundary. The second your breath runs out, freeze right where your feet land.

## How to run it

### 1. Breathe and align (2 minutes)

Gather participants along the start line spaced two arm lengths apart. Assign any non-running volunteers as sideline boundary spotters to help watch lanes and mark freeze points. Say the opening script. Lead three slow synchronized breaths in and out. Emphasize safety rules: keep eyes forward, stay in your lane, and avoid contacting other runners.

### 2. Run in waves (4 minutes)

Send runners in waves of up to 4 across designated lanes. Remaining runners wait safely behind the line. On the facilitator whistle, the active wave inhales once, begins a continuous yell or tone, and moves forward. When a runner runs out of breath, they freeze on the spot. Boundary spotters signal when each runner freezes. After five seconds frozen, the wave walks back along the outer sidelines while the next wave steps up.

### 3. Full group round (2 minutes)

All active runners line up along the full start line, spaced wide. Sideline spotters observe from the boundaries to confirm freezes. On the whistle, everyone inhales once and moves across the field together while sustaining their yell or vocal tone. Each person freezes instantly when their breath expires. Everyone holds still for five seconds to observe the group spread.

### 4. Cool down and debrief (2 minutes)

Bring everyone back to the center line. Sideline spotters share quick observations of where freezes clustered. Lead one slow group inhale and exhale to settle heart rates. Ask for two volunteer responses to the debrief questions.


## Debrief questions

- What movement pace helped you travel the farthest on a single breath?
- How did releasing vocal sound change your physical energy?

**Finished output:** Completion of individual and collective breath-and-movement trials across the marked area.

## Remote

This running game requires open floor space and is designed primarily for in-person groups. For a remote alternative: participants sit tall, inhale once deeply, and sustain a steady hum or neutral vowel sound on unmute or mute. Each person uses a stopwatch or phone timer to record how many seconds they sustain the tone without gasping, then types their time into the meeting chat.

## Hybrid

In-person runners perform the movement sprints across the room. Remote participants sit upright on camera, time their sustained vocal tones using their own stopwatch or phone timer, and post their elapsed times into the shared chat window after each wave.

## Access and participation choices

- Participants may walk, wheel, or stride at a self-selected pace instead of sprinting.
- Participants may hum, buzz their lips, whistle, or release a steady hiss instead of shouting.
- Anyone may decline active movement and serve as a boundary spotter or distance judge without giving a reason.

## If the session gets stuck

**Runners take a second breath to travel further across the area.**

Remind everyone before each wave that the goal is honest breath management; freezing the instant breath runs out is the actual rule.

**Runners veer into neighboring lanes while sprinting.**

Widen starting gaps to three arm lengths and instruct runners to pick a stationary target directly across the field.


## Terms used here

- Wave: A small group of participants moving at the same time across designated lanes to prevent collisions.
- Boundary Spotter: A participant stationed on the sideline who watches lanes for safety and notes where runners freeze.

## Sources and adaptation

Observed in the Playworks game library under the title 'Iron Lungs'.

Retained the defining Playworks mechanic of running while yelling on one breath and freezing when air runs out, followed by a collective run. UWT established 2 to 4 person waves with sideline returns to safely handle up to 24 people within 10 minutes, defined clear sideline spotter duties for non-running participants, added a whistle signal, and provided explicit non-vocal and remote timing adaptations.

[Playworks](https://www.playworks.org/game-library/iron-lungs/#)

[Playworks](https://www.playworks.org/game-library/iron-lungs/)

Current run sheet: https://unitedwetransform.com/exercises/iron-lungs/