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FlipsGTS t1_iuhqkzu wrote

Well, also a newb - but my understanding is simply by regulating the blood vessels. Since that diverts more thermal energy, normally evenly spread across your body by the blood, to the inside. Hence the average bodytemperature rises.

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woohoostitchywoman t1_iuhreb3 wrote

You also shiver a bunch. First you feel “cold” because your body has reset the desired temp to something higher than usual, this then signals your muscles to shiver thus generating heat. Same deal if you are simply outside in the cold and start to shiver.

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