Red Zone: Immobilisation Response

This lesson talks about the “red zone”, or our immobilisation response. We'll talk about how it functions, and how to recognise what this nervous system state might feel like for you. 

What is the red zone

As we learnt back in that first lesson, the red zone is our immobilisation response, where we might feel numb, low energy, or depressed. This is the dorsal vagal activation of the autonomic nervous system, which is responsible for shutting down our metabolism - slowing down our heart rate, our digestion and our visceral organs - and essentially taking our whole system ‘offline’. 

Here our nervous system is hypo-aroused - we feel sluggish, our minds are foggy, and we feel disconnected or unable to “switch on”.

Why it does this

In terms of our evolution, this is the oldest part of the nervous system - it evolved in mammals, reptiles, and even fish as a very primitive protective state of collapse. The red zone functions in this way so that if we’re in the presence of something it thinks is life-threatening or inescapable, we can immobilise ourselves in order to feign death, conserve energy or protect ourselves from feeling pain.

Because this state is further down the ladder than the yellow zone, it can sometimes feel really hard to find our way back up to the green zone, and we can find ourselves feeling stuck in this shut down response. 

Signs of the red zone

Below is a list of signs and signals of what the red zone can look like in the body and mind. Have a look at the list and notice which ones feel familiar in your life. You might find that only a few apply to you. If reading this list becomes distressing at any point, feel free to skip it. 

What it might feel like in the body:


Feeling burnt out/drained

Can’t sleep/Can’t stop sleeping

Feeling overwhelmed by most tasks

Feels hard to talk/move

Flat voice/expressionless face

Reduced appetite


Muscle fatigue/aches/pains



Feels like everything is a dream/isn’t real

Feeling detached from yourself

Feeling spaced out/foggy


Difficulty concentrating/can’t think clearly

Difficulty making decisions

Loss of interest in activities that usually bring joy


Low mood/sadness/irritability

Feeling tearful

Thoughts when you’re in the Red zone might sound like:

“I’m worthless”

“I’m not enough”

“No one cares about me anyway”

“I’m a horrible person”

“I’m completely hopeless”

“No one likes being around me”

“I have no energy to talk to anyone”

“I don’t have the motivation”

“I feel like a burden”

“I don’t see the point in doing anything”

“Everything feels too hard”

“I don’t know who I am”

“It’s never going to get better”

Noticing when we get stuck 

While this red zone can feel really unpleasant or even hopeless, we don’t want to label it as “bad”. Just like our other nervous system states, it serves a purpose. It forces the body to stop, it numbs pain, and prevents us from feeling too many overwhelming things by ‘tuning out’. 

What we need to be aware of, is if we notice ourselves becoming stuck in the red zone when it's not helpful anymore. Even if this state prevents us from feeling  pain or intense emotions, the stress or trauma is not actually able to resolve while in the red zone. Just like with the yellow zone, being stuck in a chronic state of hypo-arousal can cause health issues, prevent us from being able to engage with the world or with other people, and can make life seem kind of... lifeless. 

Coming out of the red zone

There's another thing that’s important to know about the red zone. Because it’s at the bottom of the ladder, in order to get to the green zone we actually have to go up through the yellow zone to get there.

What this means is that in order to come out of states of depression, dissociation, and shut down, there’s a chance you might begin to instead experience some of the symptoms of the yellow zone, such as anxiety. This can feel scary or wrong if you’re not expecting it, but just remember that it’s a normal and expected part of the healing process, it can be managed, and you don't have to force anything before you're ready. 

Being aware of the signs and signals for the red zone, as well as what the process of returning to the green zone might be like, is an important step towards cultivating a healthy and balanced nervous system. 

Lesson Review

This lesson talked about the basics of what the red zone is and what it might look or feel like for you.

For more information, strategies, and exercises that can help you cope when you find yourself in this zone, check out the red zone section of the 'Cope' course.