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Why the tunic is in your side when running

Why the tunic is in your side when running

Because the liver and/or spleen swell from excess blood.

If the person is calm, of his five liters of blood flowing through the vessels only half. The other half is hidden in the “blood depot” – large “hollow veins”, which flow into the heart. (Exactly the same day out of a hundred buses of the fleet on the line is only fifty years old, the rest are in the depot. – And in the morning and evening rush hour, the line go one hundred percent.)

When a person starts physical work (run), Vena cava narrowing, and stored them in blood out “from the depot on the line”, into the bloodstream. Including, blood enters the spleen (left side) . because of this, the spleen swells, the capsule (outer covering) is stretched, and there is a stabbing pain.

The same thing happens with the liver (right side) .

What to do?

1. Need to slow down, go to step – the pain should pass very quickly. (If your abdominal pain lasts longer than a couple of minutes, you have, not thinking about anything else, immediately move to the hospital. With abdominal pain not kidding .)

2. You need to warm up before serjesnimi exercise Then stored in the depot, the blood will flow into the bloodstream gradually, and the capsule of the liver and spleen has time to react.

3. Actually, “respond” will not completely brainless capsules will react to our brains. That is what we primarily trained in all training, including in the physical. (When running was stabbed in the side, you need to exercise, gradually increasing the load.)

4. In the process of training the brain to learn, not only to reduce the capsules of the liver and spleen, but also to breathe correctly . In case of irregular breathing the diaphragm is not properly performing its function “additional heart”, which the blood stagnates even stronger in the liver and spleen.

5. It is not advisable to eat before the exercise . After eating, more blood enters the liver, because the process of digestion. And then you go with your running – to “digestive” blood is added “running”.


In many places, particularly in the English Wikipedia, it is stated that the exact cause of “short-time abdominal pain associated with exercise ” (exercise related transient abdominal pain – ETAP ) is unknown . As versions in addition to “high pressure inside the liver and spleen,” treated above, are “spasm of the diaphragm due to the lack of oxygen” and “the concussion of the internal organs due to the long running”.

To shed blood, except hollow veins are skin and, in fact, the liver and spleen. I didn’t mention them above, to avoid confusion. Thinking logically: the blood stored in the liver and spleen, are not further dilate; the blood from the skin during exercise almost not taken – hence, stretching of the liver and spleen during sudden physical exertion plays a major role in blood deposited in the hollow veins.

Under “wrong” you mean too fast and shallow breathing. The diaphragm is thus reduced slightly and almost does not create additional pressure in the thoracic cavity. Because of this blood not as much as I could, coming from the liver and spleen in the Vena cava.