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Blood and temperature control - Higher. When we are too hot, blood vessels supplying blood to the skin can swell or dilate (vasodilation). This allows more warm blood to flow near the surface of the skin, where the heat can be lost to the air. This is why some people's skin looks redder when they feel too hot. When we are too cold the blood vessels supplying warm blood to the skin become narrow or constrict (vasoconstriction). This reduces the flow of warm blood near the surface of the skin, and reduces heat loss. This is why some people's skin looks paler when they feel too cold.
however she said our body s ability to control temperature or thermo regulate does involve blood circulation in the cold the small blood vessels on the surface of our body get smaller to keep warm blood deeper inside in the heat they dilate to release heat from the body over all how warm or cold a person feels has more to do with our perception of temperature than with our actual temperature she said