Tension without an obvious cause is usually accumulated tension that was never finished. Your stress response starts at a trigger, but it does not stop by itself once the trigger has gone. If that goes on for a while, that setting becomes your new resting point. Then you feel tension without anything happening.
Nothing is wrong and your body thinks otherwise.
You are on the sofa on an ordinary Sunday and your jaw is tight. Your shoulders sit high, your stomach is unsettled, and when someone asks what is wrong you have no answer.
That gets explained as making a fuss, or as something psychological. I want to offer you another reading, because it is mostly a matter of not finishing.
A stress response has a beginning and an end
Your system starts on a trigger: something is happening, get ready. After that a second half is supposed to come in which it settles again. In nature that happens on its own, by running or fighting and then shaking and breathing out.
On a working day that second half rarely arrives. The trigger goes away, you move on to the next thing, and the response stays half open.
“The trigger has passed. The response was never finished.”
Why it builds up
One half response you do not feel. Ten in a row you do. And if that carries on for weeks, your system gets used to that setting and treats it as normal.
From then on nothing has to happen for you to feel tension. You already have it. That explains why it often shows up at the weekend: nothing new is added, and then you hear what was already there.
What it does to eating
A system in that setting turns digestion down to a low flame and makes hunger and fullness weaker. At the same time it asks for fast energy.
So you get two things at once: you notice less well what your body needs, and the pull towards something sweet is stronger. That is not a lack of discipline. That is the setting you are in.
It helps to know which way round it goes. First the tension drops, then the signals come back, and only after that does what you naturally choose change. Anyone who reverses that order and starts with the choosing is working against a body still running at full setting. Then every choice costs effort and none of them lasts.
What does help
Finish the response instead of storing it. Ten minutes of brisk walking, or shaking your arms and legs loose. Movement is the second half that was missing.
Breathe out longer than in. Four counts in, six counts out. A long out-breath is the fastest signal that there is no more hurry.
Put a boundary in your day. Something between your work and your evening, even if it is five minutes. Without a marker one setting runs unnoticed into the next.
See whether there is a fixed hour in it. For most people the tension builds around the same moment. That makes it predictable, and predictable is something you can get ahead of.
Where is it right now: jaw, shoulders, stomach or throat. Put your attention there for ten seconds and see whether it drops. For many people it already eases a little, simply from noticing.
The question that shifts everything
As long as you ask where this tension came from, you are looking for an event that may not exist. Ask what did I not finish today, and you arrive at something you can actually do something about.
Frequently asked questions
Why do I feel it just as I come to rest?
Because nothing new is being added and you hear what was already there. Many people fall ill or get restless in the first days of a holiday; that is the same phenomenon.
Does hard exercise help against this?
Movement helps, but very heavy training right before a meal can strengthen the craving. Brisk walking often does more for this purpose than an hour of punishment.
How long before my resting point drops?
For most people noticeably within two to four weeks, provided something gets finished several times a day. Once a week is too little to break the habit.
When is it more than tension?
With chest pain, breathlessness, persistent palpitations or anything new and severe: see a doctor. This piece is about patterns, not about symptoms that need investigating.