By the way, a few days ago this news appeared in the media:
"Scientists
reveal the negative effects that wearing a tie can cause in the
brain.
A
group of German scientists revealed that tight ties reduce the flow
of blood to the brain by crushing the neck veins. The results of the
study were published in the Neuroradiology. Robin Lüddecke, of the
University Hospital of Schleswig-Holstein, Germany, and his
colleagues scanned the brains of 15 healthy young men before and
after putting on a tie.
Each
participant was instructed to tie a Windsor knot and tighten it to
the point of slight discomfort. Right after the men narrowed the
ties, the blood flow in their brains fell by an average of 7.5%. No
changes in blood flow were observed when the experiment was repeated
with 15 men who did not put on a tie.
The
scientists found that the use of a loop compresses the veins in the
neck, pushing the blood into the skull and creating a build up of
pressure. It is very likely that this additional pressure will crush
the blood vessels of the brain and reduce blood flow, says Lüddecke."
That
explains a few things...
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