The heating effect of alcohol is a dumb deception of heat receptors. The body, believing it is hot, begins to actively cool even more.* is

Do not mislead people, please, in the cold, the vessels that close to the surface of the body begin to narrow, all the heat goes to the internal organs, important for life. You may be a completely shaking creature, but the temperature within your body will be stable at 36.6 degrees, and your arms and legs at 15 degrees. Alcohol also has a vasodilating effect, yes, you will be more comfortable when you drink and the limbs and face will become the body, but the internal body temperature will sink sharply.