Shivering
see also: Etymology of Shivering
The shiver is a reaction of the body in the warm-blooded animals, of which the man forms part, vis-a-vis the cold.
It intervenes commonly at the time of a hypothermic situation: the body will actuate the whole of the subcutaneous muscles in order to heat the skin without needing to use the hot blood, which concentrates at this time on the vital bodies.
The shiver can also intervene at the time of a situation of fear or anguish; it makes it possible to prepare the body has to face the danger, analyzed by the brain.
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