16/01/2026
Embodied IFS meets nervous system regulation and the Polyvagal Theory
In 2021, I made a significant change to the Survive/Thrive Spiral graphic concerning how the word FREEZE is used.
As I notice the old version is STILL being shared, I’m re-sharing this updated one.
The change emerged from a conversation with Stephen Porges about how - confusingly - Freeze is used for 3 different nervous system responses.
My previous use combined these two types of Freeze, and was located within the red ‘I Can’t’ zone:
1. FUNCTIONAL FREEZE - the ‘Submit’ response: the feel is Dorsal but there is enough Sympathetic energy in the system to keep going
2. TONIC IMMOBILITY FREEZE - the ‘Collapse’ response: pure Dorsal
The new use is located at the junction of the red ‘I Can’t’ and yellow ‘I Must’ zones, and represents this type of Freeze:
3. STARTLE FREEZE - an emergency fear response: like a deer in the headlights, this type of Freeze is rigid (unlike Submit or Collapse). The heart is pumping hard with Sympathetic energy alongside an equally strong of Dorsal immobility.
This 3rd type of Freeze is a nexus point at which Sympathetic and Dorsal are contrary forces, rather than collaborating as in Submit. It is often described as having one foot on the accelerator revving the engine whist the other is pressing the brake. It is a place that presents an urgent choice which needs to be resolved quickly, either into Fight/Flight or into Submit/Collapse. With trauma, the overwhelm of excessive Startle Freeze often leads to psychological splitting.
🌀 You can download a PDF of the updated Spiral here:
http://calmheart.co.uk/resources in either A4 or US LETTER.
💚 I offer an experiential workshop called Exploring the Survive/Thrive Spiral, suitable for professionals and anyone interested in trauma & the nervous system, which happens several times a year - full information here 👇🏼👇🏼
SPACES AVAILABLE on the next workshop!
🌟🌟 Wed 5 Nov 2025 8-11 AM GMT
(9 AM CET / 4 PM WITA / 5 PM JST / 7 PM AEDT / 9 PM NZDT)
If you're in a USA timezone, the next one for you is on Wed 17 Dec.
INFO 3 BOOKINGS: https://www.tickettailor.com/events/calmheart