I got this project for school, and one of the largest questions are: Why can you faint if you stand still for too long? I don't really know how to formulate myself in that sense... so if you we're able to explain - it would be a massive help?
If you stand for too long, the veins in your legs may dilate (open up) and causing pooling of blood in the legs. This means that blood is diverted temporarily away from the vital organs, primarily the brain, causing a reflex called Vasovagal Syncope. This causes the feeling of feeling faint and causes you to faint, meaning that you are now lying flat and blood is able to adequately perfuse the brain.
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