It generates heat through the processes of its metabolism. The body then does all it can to obey the hypothalamus and hold its temperature at this setting. This acts as a thermostat and 'sets' the normal body temperature to around 37☌ (98.6☏). Our body temperature is controlled by a part of the brain called the hypothalamus. Hypothermia can come on gradually in elderly people in their own homes, particularly during spells of cold weather. However the possibility of hypothermia should not be forgotten in someone who is shivering. You are unlikely to confuse the two, as a person with hypothermia will be cold to the touch, and their recent exposure to a cold environment is likely to be obvious. The shivering, pale face and sensation of cold in the shivery phase of rigors are similar to the shivering, pale face and sense of cold patients experience when their body temperature is actually too low (hypothermia).
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