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Friday, 15 June 2018

Do you get dizzy when you get out of bed fast? This is the scientific reason

It has happened to all of us that we are calmly resting, without much concern, when in an instant we remember that we have to do something or we need to go for some object. This is how we got up from the bed or the armchair and, suddenly, we felt a slight dizziness.


We are invaded by a feeling that everything around us moves and we even feel a bit dazed. This could worry us, especially if we are not fasting or have a health problem that causes us vertigo. But calm, all this has a scientific explanation.

It turns out that when we stand up abruptly, the force of gravity causes a large part of the blood to concentrate in the lower part of the body. In turn, this causes the blood flow and oxygenation of the brain to decrease. In medical terms, this is known as initial orthostatic hypotension.

To compensate for this problem, the heart makes a slight overexertion to bring the blood where it is needed. That extra effort, added to the hypoxia in the brain, results in the feeling of dizziness.

Fortunately, this is temporary and within seconds the blood circulation is restored throughout the body. In case you present another symptom such as nausea, blurred vision or fainting, it is better to go with your doctor to rule out any condition.

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