A burning pain in the middle of the back, typically after long sitting. Those muscles are not weak — they are overstretched. That difference matters.
Burning or pressure between the shoulder blades that announces itself after a few hours of sitting and eases with movement. Sometimes it speaks up on a deep breath or when twisting the torso. The urge to stretch backwards is strong — and it helps for a few minutes.
The thoracic spine is the least mobile part of the spine; the ribs hold it. Sitting hunched leaves it bent, and the muscles between the shoulder blades spend the whole day stretched — holding the chest so it does not fall further forward.
That is why strengthening usually does not help. A muscle that is overstretched and tired from holding does not relax because you add load. The position it works in has to change first.
The chest needs to open first; only then does engaging the muscles make sense. Spiral stabilisation uses a diagonal downward arm pull: the shoulder blades draw together and down, the thoracic spine lengthens, and the muscles between the blades finally get a position in which they can let go.
Breathing into the back is part of the exercise, not an extra — a breath into the area between the shoulder blades opens that part of the chest from the inside.
Immediately, not after exercising: a gripping pain that radiates into the arm or jaw, together with breathlessness, sweating or nausea. That does not belong on an exercise mat.
Also pain that started after an injury, wakes you at night, or comes with fever and weight loss.
A guide in the Spiralista app takes you through the exercises for this condition day by day — from the first exercise to the full sequence.