From the outside it may look like “things are finally calmer”: the project is finished, the company crisis has passed, things at home are relatively in order. Yet the body is still running at high revs — the heart races for no reason, sleep is fragmented, small things trigger a fire-alarm reaction.
This is not laziness or a “lack of keeping it together.” It is the way the nervous system learns threat and — for safety — stays in alarm mode even when, objectively, it would be possible to let go.
Threat mode of the body — what does the autonomic nervous system do?
The autonomic nervous system works like an internal safety system. It has three main modes:
Fight / flight (sympathetic activation) – the heart beats faster, breathing becomes shallower, muscles tense, the body prepares for action.
Freeze (immobility response) – when the threat is overwhelming, the body “pulls the plug”: slowing down, shutdown, a sense of unreality.
Rest and digest (regenerative mode) – calm, digestion, restoration of resources, a feeling of relative safety.
With healthy regulation you switch between these states flexibly: mobilize for a challenge, then genuinely return to rest. In chronic stress the safety threshold shifts — the nervous system turns on the alarm more often and turns it off more slowly. It’s a bit like a home alarm that starts reacting not only to an intruder, but also to a draft or a shadow on the wall.
How does the body learn chronic stress?
The brain in continuous threat-scanning mode
With prolonged load the brain “learns” that the world is potentially dangerous. Centers responsible for threat detection (e.g. the amygdala) become more reactive, and the stress-response system activates more quickly and more often.
In practice: your mind automatically looks for what might go wrong. Thoughts cling to worst-case scenarios, and the body responds with tension before you have time to notice consciously.
Chronic muscle tension — a map of persistent arousal
When the nervous system lives in fight/flight mode, muscles rarely get the signal that they can truly let go. Common “maps” of chronic tension include:
neck and shoulders pulled up as if defending,
a clenched jaw, teeth grinding at night,
the abdomen “pulled in,” tense as if bracing for a blow.
Over time this tension becomes so “normal” that many people notice how tense they were only when they relax deeply for the first time.
Loss of nervous system flexibility
In chronic stress the nervous system loses flexibility: it is very easy to enter threat mode and very hard to get out of it.
A small trigger (an email, a look, a mistake in a presentation) sets off a crisis-like reaction.
After a hard day the body takes a long time to “wind down” — sleep does not bring relief, a weekend is not enough, a holiday is spent recovering back to baseline.
This is not hysteria — it is an entrenched physiological pattern.
Symptoms that the body has stayed in stress mode
In patient language, not textbook language:
Sleep: difficulty falling asleep, frequent awakenings, waking up tired; your mind “keeps churning” even when you desperately want to fall asleep.
Tension and pain: stiff neck, tight shoulders, jaw clenching, headaches, abdominal pain, back pain — often with normal test results.
Emotions: irritability, outbursts of anger, tearfulness or, conversely, disconnection, a sense of “nothing bothers me,” running on autopilot.
Functioning: difficulty concentrating, thinking “through a fog,” feeling that simple decisions require superhuman effort.
Important: symptoms such as heart palpitations, shortness of breath, severe chest pain, sudden dizziness, fainting always require medical evaluation — we do not assume in advance that “it’s just stress.”
From a clinician’s perspective — when is it more than just stress?
At the clinical level we are not talking about “stress” but about specific diagnoses, e.g.:
anxiety disorders (panic attacks, generalized anxiety, social anxiety),
depressive disorders, adjustment disorders,
sleep disorders related to stress,
psychosomatic disorders (e.g. some chronic pains, gastrointestinal complaints).
Warning signs:
symptoms persist for weeks or months,
they significantly limit functioning (work, relationships, self-care),
thoughts of giving up or suicidal thoughts appear, or there is alcohol / medication / substance misuse.
In such situations diagnosis and a therapeutic decision are needed: psychotherapy, pharmacotherapy, or their combination — according to guidelines. Work on regulating the nervous system is then a complement, not a substitute for treatment.
Nervous system regulation — first steps for someone in chronic tension
These are not magic tricks, but small, repeatable signals that tell the body: “we can lower the alarm a little.”
Short breathing practices
2–5 minutes a day: a calm inhale, a slightly longer exhale (e.g. 4 seconds inhale, 6–8 seconds exhale). Doable between meetings, in the car, in the bathroom.Conscious muscle relaxation
A quick “body scan”: notice where tension is greatest (neck, shoulders, jaw, abdomen), tense those areas briefly stronger, then let them drop. A few times during the day, not just on a mat.End-of-day closure
A simple evening ritual: 30–60 minutes without screens, something repetitive and predictable (a shower, tea, a book, a few gentle exercises, writing down what is “churning” in your head). The point is the signal: “the day is over.”
These micro-steps will not cure anxiety disorders or depression on their own, but they are an important part of a larger plan — they help the nervous system gradually regain flexibility.
When and how to seek help?
You can ask yourself a few questions:
How long has this been going on — days, weeks, months?
To what extent does it limit my life: work, relationships, self-care?
Am I doing things I didn’t need before to “get through” (e.g. more alcohol, uncontrolled medication, complete withdrawal)?
Are thoughts like “I don’t see the point,” “everyone would be better off without me” appearing?
If:
symptoms persist for more than a few weeks,
they clearly impair functioning,
or you have any thoughts of giving up / suicidal thoughts —
this is the moment to not stay alone with it.
Possible paths:
psychiatric consultation — diagnosis, discussion about pharmacotherapy and further plan,
psychotherapy (especially approaches working with the body and emotion regulation),
work on lifestyle and the nervous system as a consistent, parallel pillar.
This text is for educational purposes and does not replace an individual consultation with a physician or a therapist. If you feel your body is stuck in threat mode, it is not a reason to be ashamed — it is a signal that your nervous system did everything to protect you and now needs help to relearn what safety is.
