Our neck being very vulnerable must not be subjected to extreme bending positions. Especially the backward bend is way more dangerous. Way back, I had posted about the "Sink Shampoo Syndrome", also called as "Beauty Parlor / Salon Stroke Syndrome" which is caused by leaning back into the hard portion of the salon sink with the neck tilted backwards, either for a head massage or for shampooing hair. Apparently, placing the neck in such an awkward position can not just cause severe neck pain but also lead to life threatening conditions like stroke. Read all about it in " Can a shampoo session in a beauty parlor trigger strokes ?"
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