Anxiety & Constant Fight-or-Flight Mode: Why Your Body Won’t Relax

The fight-or-flight response is a normal biological tool meant to keep you safe from harm. This may be beneficial in some situations if you are in danger. However, it becomes a concern when it is constantly activated.^[1]

Most people feel tense after a difficult day or find themselves unable to relax when they have a lot on their minds. The problem is when your body stays on alert even after the stressful thing has passed.

When this defence system remains activated for long periods, it creates a chronic stress response that can make anxiety symptoms progressively worse.^[1]To understand why this happens, and how you can start to resolve anxiety, this article will explore:

Anxiety and the Stress Response

Everyone has the fight-or-flight system in their body. It is activated when physical or psychological danger is present, and it is a natural stress response.^[1]

To understand why anxiety changes the fight-or-flight response, it helps to first understand how the system normally works in people without chronic anxiety symptoms:^[1][2]

1. The part of the brain that recognizes danger (the amygdala) detects a “threat” (real or imagined) in the environment.
2. This sends a warning signal to another part of the brain, the hypothalamus.
3. The hypothalamus activates the sympathetic nervous system, which then sends emergency signals around the body.
4. These emergency signals cause the hormone adrenaline to increase, which leads to physical shifts in the body. These include muscle tension, increased heart rate, and hypervigilance. All of these changes prepare your body to ensure safety.
5. Once the threat has passed, the parasympathetic nervous system activates. This is often referred to as the “rest-and-digest” response, as it counteracts fight-or-flight. This system returns your body to a resting state.
6. However, if you experience anxiety, your parasympathetic nervous system isn’t always as effective at doing this. Your body’s natural calming response doesn’t work the way it should, and this may result in increased anxiety.^[3]

This anxiety can also cause physical symptoms, which put additional stress on the body. It can affect your breathing and sometimes cause hyperventilation (breathing faster and deeper than your body requires). As a result, you may become dizzy, feel your chest tighten and tingle, and even feel like you can’t breathe.^[4] These physical symptoms can then feel very frightening, adding more fear to a system that’s already activated.

If you are experiencing these physical anxiety symptoms, it may be due to the fight-or-flight response as opposed to a medical emergency. However, if these symptoms feel constant, this could be a sign of something more complex.

Anxiety and Nervous System Dysregulation

Nervous system dysregulation is when your body struggles to keep its natural balance between fight-or-flight and rest-and-digest. If your body just won’t relax, it may be a sign that you have become used to living in a constant cycle of anxiety.^[5][1]

When your natural calming system (the parasympathetic nervous system) is less effective, the physiological arousal from fight-or-flight lasts longer, causing you to feel constantly “on edge.”^[3][1] Physiological arousal is your body’s state of readiness for action.

If your body can’t rely on its own stress relief process, this can create a cycle:^[6][3][1]

1. A worrying thought, memory, or experience activates the stress response.
2. This brings on physical anxiety symptoms such as dizziness, sweating, and shortness of breath.
3. Your brain interprets these symptoms as proof that there is danger around.
4. This increases fear, which then activates the fight-or-flight response once again. This makes it even harder for your body to relax.

With an anxiety disorder, this cycle runs even when nothing bad is happening. Symptoms occur even when there is no actual threat present.^[6] You may try to push the panic down, knowing there is no real danger. But suppressing anxious thoughts keeps attention on them, which can heighten distress and prolong symptoms.^[5]

It may be that the link between anxiety and the stress response goes back to something traumatic. This can be difficult to come to terms with, and you may wonder whether you will always feel this way.

Feeling Stuck After Trauma

If you have experienced something traumatic and feel like you’re struggling to move forward, that’s a common response to an overwhelmed nervous system.

Trauma and anxiety can often feed into one another. If you are living with post-traumatic stress disorder (PTSD), your natural alert systems are likely extremely sensitive. This is known as hypervigilance, and it means your nervous system is constantly activated as if there is a threat around every corner.^[6]

Hypervigilance is a common but unhelpful response to trauma. Without realizing it, you may:

These behaviors can make it incredibly difficult to relax, socialize meaningfully, and engage with everyday life.^[6]

Deactivating the Stress Response

Anxiety cannot be forced away, and the nervous system cannot simply be turned off. However, coping strategies can bring you back to the present and tell your brain that you’re safe in this moment. This gives the body’s calming systems the chance to take over.^[7] There are several different coping strategies that can be effective.

Treatment for a Chronic Fight-or-Flight Response

When coping strategies are not enough, there is a wide range of therapies that can be effective for chronic and severe anxiety.

Mental Wellness Designed Around Your Life

Find Supportive Anxiety Treatment at Mission Connection

If you or someone you care about is struggling with constant anxiety, help is available. At Mission Connection, we offer personalized outpatient treatment tailored to your unique needs. Our expert clinical team provides medication management in conjunction with a range of other mental health treatment approaches.

In addition to standard outpatient care at our locations in California, Virginia, and Washington, we also offer more intensive levels of care, such as a partial hospitalization program (PHP) or an intensive outpatient program (IOP). We treat a variety of mental health conditions and are in-network with most major insurance providers.

To find out more about our in-person, virtual telehealth, or hybrid program that combines in-person and virtual care, call us at 866-833-1822. You can also get started online.