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It could be from a combination of factors, which is why this tendancy seems to be different for different people. The main reason might be that one of the first things to get digested are simple sugars and since sugar is the body's preferred source of energy, it burns it up as it enters the blood stream through the stomach lining and that's what makes a person warm.

Another reason is that the digestive process uses lots of energy, and that creates a lot of heat. For the same reason our bodies get warm when we exercise, we also get warm when we digest.

Other reasons would have to include the parasympathetic division of the autonomic nervous system. This system is designed to make us more relaxed to allow our bodies to divert more blood to our digestive system, and that in turn would also help warm us up.

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βˆ™ 2010-12-08 05:44:57
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Q: Why do some people become warm after eating?
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