>I believe the idea is not that it's a nervous system trick, but by heating or cooling a part of the body with high blood flow which occurs near the surface of

>I believe the idea is not that it's a nervous system trick, but by heating or cooling a part of the body with high blood flow which occurs near the surface of the skin, you're actually going to impart a meaningful change on overall body temperature. From the article i understand that it is a nervous system trick: "The research suggested that anything with a temperature change greater than 0.1 degree Celsius per second would produce the effect".