No, a Drink Won't Warm You Up — the Winter Myth That Makes You Colder
Picture the scene, because almost everyone has lived some version of it. It is a cold night, the kind where breath fogs in the air and fingers stiffen inside gloves. Someone produces a flask, takes a sip of something strong, and exhales with satisfaction. Warmth spreads across their cheeks. Their hands tingle. They declare, with total confidence, that they feel warmer already. Everyone nods, because everyone has felt exactly the same thing, and because the feeling is so immediate and so pleasant that questioning it seems almost rude.
The feeling is real. The conclusion drawn from it is wrong, and the gap between the two is one of the most dangerous misunderstandings in everyday physiology. Alcohol does not warm you up. It makes you feel warm while your body is actually getting colder, and it does so by disabling the very defences your body uses to survive the cold. On a mild evening indoors, that is a curiosity. Outdoors, in wind and snow, it can be the difference between a story told later by a fire and a rescue that arrives too late.
This is a claim worth taking seriously precisely because it is not obviously absurd. Many health myths collapse the moment you look at them closely. This one survives close inspection for a while, because the sensation it describes is genuine, because it has been wrapped in centuries of folklore and fiction, and because the mechanism behind it is genuinely interesting. It is only when you follow the heat — where it comes from, where it goes, and what your body sacrifices to produce that pleasant flush — that the myth falls apart.
The claim
The claim, in its simplest form, is that drinking alcohol warms your body. Drink a shot of whiskey, a glass of brandy, a mug of something spiced and strong, and your body temperature rises. The claim comes in softer versions too: that a drink “takes the edge off” the cold, that it helps you endure a winter walk, that it is a reasonable way to warm up a person who is already cold. It appears in folk wisdom, in old novels, in films, and in the image everyone knows best of all — the giant rescue dog trotting through the snow with a little barrel of brandy around its neck, ready to revive a stranded traveller with a warming sip.
Each version rests on the same piece of evidence, and it is evidence that anyone can gather in about thirty seconds: drink, wait, and notice that you feel warmer. Your face flushes. Your hands feel less stiff. The cold seems further away. If feeling warmer meant being warmer, the case would be closed. But feeling warmer and being warmer are two different things, and the human body is full of systems in which the two come apart. A fever makes you shiver even as your temperature climbs. A hot bath makes your skin glow while your core barely changes. Alcohol exploits the same gap, and it does so with unusual efficiency.
Why it feels so true
To understand the illusion, you have to understand what alcohol actually does in the first minutes after you drink it. Ethanol is a vasodilator: it relaxes the smooth muscle in the walls of blood vessels, particularly the small vessels near the surface of the skin, and those vessels widen. More warm blood from your body’s core flows outward to your skin. Skin temperature rises. The nerve endings in your skin, which are the sensors your brain relies on to judge how warm you are, report exactly what they detect: the skin is warmer than it was a moment ago.
Your brain, receiving that report, concludes that you are warmer. That conclusion is reasonable given the information available to it, and it is also wrong about the thing that matters most. The heat now warming your skin did not appear from nowhere. It was moved. It was taken from your core — the trunk of your body, where your heart, lungs, liver and brain sit — and spent at the surface, where it is easiest to lose to cold air. The Tennessee Department of Health put the point plainly when it warned residents against the idea of a warming drink. “When a person drinks alcohol, blood flow to the skin increases, producing a feeling of temporary warmth,” said the department’s chief medical officer, David Reagan. The department’s warning continued with the crucial contrast: the body’s normal reaction to cold is the opposite, moving blood away from the skin and toward the core to protect vital organs.
Think of your body in winter as a house with a furnace and a thermostat. In the cold, the sensible strategy is to close the shutters, shut the doors to unused rooms, and keep the heat where the people are. Vasoconstriction — the narrowing of blood vessels near the skin — is the body closing its shutters. Alcohol throws the shutters open. Cleveland Clinic physician Dr. Waters described the effect with a vivid image, saying of a drinker in the cold: “You’re turning on your radiator to send your heat out into the environment. You might feel warm, but it creates a dangerous situation.” The radiator is your skin. The environment is very happy to accept the heat. It does not give it back.
Your thermostat, and how alcohol fools it
The thermostat in this analogy is real. It is a small region at the base of the brain called the hypothalamus, and it works tirelessly to hold your core temperature in a narrow range around 37 degrees Celsius (98.6 degrees Fahrenheit). When you get cold, it orders a sequence of defences. Blood vessels near the skin constrict, keeping warm blood near the core. Tiny muscles at the base of hairs contract, producing goosebumps. If that is not enough, muscles begin to shiver, and shivering is remarkably effective: it is your body deliberately burning fuel to make heat, the way you might stamp your feet or rub your hands together, except involuntary and far more powerful. Behaviour follows physiology. You feel uncomfortable, you seek shelter, you add a layer, you go inside. Discomfort, in this system, is not a flaw. It is the alarm.
Alcohol interferes with almost every step of that sequence. By widening the vessels the hypothalamus is trying to narrow, it undoes the first defence. By dulling the brain’s ability to signal muscles to shiver, it weakens the second. By dulling perception itself, it muffles the alarm. A family practice specialist quoted by USA TODAY in 2023 explained the danger in plain terms, saying that too much alcohol dulls the perception of cold and pain, so a person whose temperature is dropping may simply stay outside too long. The drinker is not lying about feeling fine. The drinker is reporting, honestly, what a compromised sensor system is telling them. That is what makes the myth so hard to kill: the witness is sincere, and the witness is wrong.
This is also why the usual defence of the myth — “well, I felt warmer, so it must have done something” — misses the point. Nobody disputes the flush. Doctors dispute what the flush means. A flushed face after a drink is not evidence that your body has gained heat, any more than a red face after running for a bus is evidence that the bus warmed you. In both cases, blood has moved toward the skin. In the running case, muscles have genuinely generated extra heat to go with it. In the drinking case, no new heat has been generated to replace what is now radiating away. The account is being drawn down, and the pleasant feeling is the sound of the withdrawal.
What happens to your core
Hypothermia is the name for what happens when that withdrawal goes too far. It is defined as a core temperature below 95 degrees Fahrenheit (35 degrees Celsius), only a few degrees below normal, and it is far more dangerous than that small gap suggests. The early symptoms are confusion, sleepiness, clumsiness, apathy and slurred or confused thinking — symptoms that, as the Tennessee Department of Health noted, can easily be mistaken for simple drunkenness. That resemblance is part of the danger. A person sliding into hypothermia may look like a person who has simply had a bit too much to drink, and the people around them may treat the situation accordingly, waiting for the person to sober up rather than recognising a medical emergency. As core temperature falls further, the heart and breathing can fail. Severe hypothermia demands professional medical attention, and the department’s advice for suspected cases is direct: call emergency services, and in the meantime get the person dry, warm, fed and sheltered, with gentle movement rather than further alcohol, caffeine or tobacco.
None of this requires heroic quantities of alcohol or Arctic conditions. A moderate drink impairs the system; a larger amount impairs it more. Wind strips heat from exposed, blood-filled skin faster than still air. Wet clothing strips it faster still — Cleveland Clinic’s Dr. Waters warned that if you get wet, you lose heat far faster than when dry, which is why a fall into snow or slush after drinking is more dangerous than the same fall sober. Dehydration compounds the problem, because alcohol is a diuretic: it makes you urinate more, and cold air already reduces the sensation of thirst, so a drinker in winter can be losing fluid without noticing. Less fluid means less blood volume to carry heat where it is needed, and a heart working harder to do a job the body is simultaneously sabotaging.
There is a second, quieter cost that rarely appears in the folklore. Alcohol impairs judgement about the cold in the same way it impairs judgement about everything else. The sober brain thinks twice about a long walk through a snowstorm, about shedding a jacket because the first flush of a drink feels warm, about sitting down “just for a minute” on a cold bench. The drinking brain, warm-cheeked and confident, is more likely to make each of those decisions, and each one extends exposure while the body’s defences are down. The myth does not merely misdescribe physiology. It changes behaviour in exactly the direction that makes the physiology worse.
The dog with the barrel
No version of this myth is more beloved than the Saint Bernard with the brandy barrel, and it is worth pausing on, because it shows how a good story can outlive the facts by two centuries. The dogs were real, and their heroism was real. Monks at the hospice on the Great Saint Bernard Pass, high in the Alps between Switzerland and Italy, bred large, powerful dogs from the seventeenth century onward, and the dogs genuinely searched for travellers lost in snow, using their sense of smell to find people buried by avalanches. The famous rescue dog Barry, preserved in a museum in Bern, is said to have saved dozens of lives. That part of the legend survives scrutiny.
The barrel does not. The image of a small keg strapped around a dog’s neck comes, by the most widely accepted account, from a single painting: Edwin Landseer’s 1820 work “Alpine Mastiffs Reanimating a Distressed Traveller,” in which one dog wears a barrel that the young artist said contained brandy. The monks themselves have said the dogs never carried brandy, and the barrels, if they carried anything at all, would more plausibly have held food and water. The logic of the legend collapses the moment you apply the physiology: giving a strong spirit to a person already losing core temperature would accelerate the very crisis the dog was supposed to be rescuing them from. A warming sip for a hypothermia victim is not a rescue. It is the opposite of one. Yet the image stuck, because it is charming, because it flatters the idea that folk remedies contain hidden wisdom, and because it gives the warming-drink myth a hero, a mountain and a noble animal to stand behind it.
The barrel story also reveals something about how myths like this travel. They rarely arrive as formal claims to be tested. They arrive as jokes, as film scenes, as something a grandparent said while pouring a drink, as a label on a bottle. Each retelling borrows credibility from the last, and by the time someone thinks to ask whether the claim is actually true, it feels too familiar to doubt. The Saint Bernard did not create the alcohol-warming myth, but the dog gave it a face, and faces are harder to argue with than facts.
The partial truths, fairly stated
A good fact-check should be fair to the claim it rejects, and this claim does contain fragments of truth, which is part of why it endures. First, the warmth is not imaginary in the narrowest sense: skin temperature genuinely rises for a while, and a person whose fingers are painfully cold may feel real relief as blood returns to them. In a narrow, specific situation — a person who is about to be rescued, indoors within minutes, whose fingers are at risk of frostbite — sending blood to the extremities is not obviously harmful. But that is a very different claim from “alcohol warms you up,” and it is not the claim people act on when they drink before a winter walk or hand a flask to a cold companion. Context turns a physiological footnote into a dangerous rule.
Second, alcohol does contain energy. Ethanol is metabolised by the body, and metabolism produces some heat, just as burning any fuel does. The problem is one of scale and timing. The energy is released slowly, over hours, while the vasodilation dumps heat immediately and continuously. It is like lighting a candle in a house whose windows have all been thrown open in a blizzard: technically, heat is being produced, and practically, the house is getting colder. Nobody who understands the balance would choose a drink as a heating strategy, and nobody should confuse the small metabolic contribution with the large, immediate loss it accompanies.
Third, there is the warmth of everything that surrounds drinking in winter, and this may be the most important partial truth of all. A hot toddy is hot. A crowded room is warm. A meal eaten with friends is warming in a way that has nothing to do with its alcohol content, because food provides fuel for shivering and for metabolism, and company provides shelter, movement and attention. When people say a winter drink warmed them, they are often, without realising it, crediting the alcohol for the work done by the heat of the drink itself, the food, the fire, the roof and the company. Remove the alcohol from that scene and keep everything else, and the warming remains. Remove everything else and keep only the alcohol, outdoors, alone, in the wind, and the warming vanishes — and reverses.
Who is most at risk
The people most exposed to this myth are not the people drinking by a fire. They are the people who drink where the cold can actually reach them. Outdoor workers finishing a shift with a drink before the walk home. Hikers and skiers celebrating at a mountain hut and then heading back out. Festival-goers and revellers on cold nights, dressed for a party rather than for the weather, whose judgement about going inside is dulled at exactly the moment it matters. People sleeping rough in winter, for whom a drink can feel like the only warmth available, and for whom the consequences of a falling core temperature are most severe. And, quietly, the friends and companions of all of them, who may mistake the early signs of hypothermia for drunkenness and wait, reassured by the flushed cheeks, while the situation worsens.
Age and health sharpen the risk further. Older people regulate temperature less efficiently and may feel cold less acutely. People with heart problems face an extra strain, because sending blood to the skin takes it away from the core at the same time as alcohol raises heart rate, a combination Cleveland Clinic flagged as particularly concerning for anyone with cardiovascular disease. People who are already wet, tired, hungry or ill have fewer reserves to spend. None of these groups needs a lecture about drinking. All of them deserve a clear statement of the physics: the warmth you feel is your heat leaving, and the colder it is, the faster it leaves.
What actually keeps you warm
If alcohol is not the answer, the real answers are gratifyingly boring, which is perhaps why they lose the contest for attention. Layers trap air, and trapped air insulates; a windproof outer layer matters more than a thick one in a gale. Staying dry matters more than either, because water conducts heat away from skin far faster than air. Food matters, because shivering and metabolism need fuel, and a body that has eaten is a body that can afford to make heat. Movement matters, because working muscles genuinely generate heat, unlike a drink. A hot, non-alcoholic drink matters, because it adds a small amount of real heat without opening the body’s shutters, and because holding it encourages you to stay still, sheltered and attentive. And shelter matters most of all, because no clothing strategy competes with simply being out of the wind.
It is worth saying this plainly because the myth crowds out the truth. Every winter, in every cold country, there are people who will reach for a flask when they should reach for a jacket, a meal, a dry pair of socks or a door. The myth does not merely fail to help. It actively displaces the help that would have worked, by offering a warm feeling in exchange for the warmth itself. That is a bad bargain in any currency, and it is a terrible one when the currency is core temperature.
The Verdict
Verdict: False. Drinking alcohol does not warm your body. It widens the blood vessels near your skin, sending warm blood from your core to the surface, where it produces a genuine sensation of warmth and is then lost to the cold air. Core temperature falls, not rises. The body’s defences against cold — vasoconstriction, shivering, and the discomfort that drives you to seek shelter — are all weakened at the same time, and judgement about the cold is dulled along with them. The Tennessee Department of Health’s warning captures the whole mechanism in a single contrast: the body in cold tries to move blood from skin to core to protect vital organs, and alcohol forces it in the opposite direction.
That verdict is not a matter of opinion or of one study against another. It is the settled position of public health agencies and clinicians, it follows directly from basic thermoregulation, and it explains every part of the experience that makes the myth feel true. The flush is real, and it is the evidence against the claim, not for it: it is the visible sign of heat being spent. The Saint Bernard’s barrel is a painter’s invention. The winter flask is a radiator pointed at the sky. The next time someone offers you a warming drink on a cold night, enjoy the company, enjoy the fire, enjoy the shelter — and if you want to actually get warm, keep your jacket on, eat something, move around, and drink something hot that contains no alcohol at all.
The myth will survive this article, as myths do. It will survive because it feels good, because it is old, and because the dog with the barrel is too charming to retire. But myths survive by being repeated, and they weaken every time someone, offered a flask on a freezing night, remembers where the warmth is actually going. Your skin is not the furnace. Your core is. Keep the heat where it belongs, and let the flush be what it has always been: a warning disguised as a comfort, telling you, in the warmest possible terms, that you are getting colder.