“Alcohol warms your body”

The idea that alcohol can warm you up, particularly in cold weather, is a widespread misconception with roots in historical practices and popular culture. For instance, the enduring image of St. Bernard dogs carrying casks of brandy to stranded alpine travelers has long perpetuated the belief that a sip of spirits provides genuine warmth. Explorers in the 19th and early 20th centuries also sometimes consumed alcohol, believing it offered medicinal or warming properties during their arduous journeys.

However, the scientific truth reveals a different story. When you drink alcohol, it acts as a vasodilator, meaning it causes the blood vessels, especially those close to the surface of your skin, to widen. This dilation allows more warm blood from your body's core to flow to your skin, creating a temporary and misleading sensation of warmth and often a flushed appearance. While your skin may indeed feel warmer, this process actually accelerates heat loss from your core body, where vital organs need to maintain a stable temperature.

The reason this myth persists is largely due to that immediate, palpable feeling of warmth on the skin. Your brain interprets the increased blood flow to the surface as a sign that your entire body is warming up. However, this "beer blanket" effect is an illusion. As heat rapidly escapes from your dilated blood vessels into the colder environment, your core body temperature actually begins to drop, increasing the risk of hypothermia, especially in cold conditions. Alcohol can also impair your body's natural shivering response and your ability to accurately perceive how cold you truly are, further compounding the danger.