Can Sauna Help Hangovers?

It's a question people ask every weekend: does a sauna help a hangover, or does it make it worse?

Across Finland, Estonia, Russia and other Nordic countries, many people have long associated sauna with recovery after a night of drinking. In Finland, it's not unusual for people to enjoy a beer after a sauna ("saunakalja"), although health experts strongly advise against drinking alcohol during or immediately before heat exposure.

So is there any truth behind the idea that a sauna can cure a hangover?

The answer is yes and no. A sauna may relieve some hangover symptoms once the alcohol has left your system, but it does not speed up alcohol metabolism or "sweat out" a hangover. In some situations, it can actually make things worse.

What Causes a Hangover?

To understand whether sauna helps, it helps to understand what a hangover actually is.

Alcohol affects the body in several ways simultaneously:

• Dehydration caused by increased urine production
• Electrolyte loss
• Accumulation of acetaldehyde, a toxic by-product produced as alcohol is broken down
• Poor-quality sleep and disrupted REM sleep
• Low blood sugar
• Inflammation throughout the body
• Changes in blood vessel dilation, contributing to headaches

Research published in the journal Alcohol and Alcoholism concludes that hangovers are driven by a combination of dehydration, immune activation, inflammatory responses and disrupted sleep rather than any single cause. Because multiple systems are affected, there is no genuine "cure" for a hangover—only ways to reduce symptoms.

Can a Sauna Cure a Hangover?

The short answer is no.

One of the biggest myths surrounding sauna use is that sweating removes alcohol from the body.

It doesn't.

More than 90% of alcohol is metabolised by the liver. Only tiny amounts leave through sweat, urine and breath. Sitting in a sauna may make you sweat heavily, but it does not accelerate the rate at which your liver processes alcohol.

The idea of "sweating out last night's drinks" simply isn't supported by medical evidence.

Where a Sauna Can Help

Although it won't eliminate alcohol, a sauna may help relieve some of the symptoms that make a hangover feel miserable—provided you're no longer intoxicated.

Improved circulation

Heat exposure causes blood vessels to dilate, increasing circulation throughout the body.

This improved blood flow delivers oxygen and nutrients more efficiently to muscles and soft tissues, which may help reduce the general aches and fatigue many people experience after drinking.

Researchers Timo Hannuksela and Samer Ellahham note that sauna bathing produces cardiovascular responses similar to moderate exercise, increasing heart rate while promoting vascular function.

Mood and mental clarity

Regular sauna bathing has been shown to stimulate the release of endorphins and other neurotransmitters associated with relaxation and improved mood.

While this won't remove alcohol from your bloodstream, many people report feeling mentally clearer and calmer after a gentle sauna session once they've rehydrated.

Muscle relaxation

If you've slept badly or spent the previous evening tensing muscles while drinking, the combination of heat and relaxation can ease muscular stiffness and tension headaches.

When a Sauna Can Make a Hangover Worse

This is the part many people overlook.

A hangover already places significant stress on the body.

Adding intense heat can increase that stress further.

Dehydration

Alcohol is a diuretic, meaning it causes increased fluid loss through urination.

A traditional sauna can produce substantial additional sweating, worsening dehydration if fluids haven't been replaced first.

This can intensify:

• Headaches
• Dizziness
• Fatigue
• Rapid heart rate
• Low blood pressure

Cardiovascular strain

Sauna bathing naturally increases heart rate and lowers blood pressure as blood vessels expand.

If you're already dehydrated after drinking, this combination can increase the likelihood of:

• Light-headedness
• Fainting
• Heart palpitations

A review published in The American Journal of Medicine concludes that alcohol consumption before or during sauna bathing should be avoided, particularly because of increased cardiovascular stress and the potential risk of arrhythmias in susceptible individuals.

Alcohol impairs temperature regulation

Even if you don't feel drunk anymore, your body may still be recovering from alcohol's effects.

Alcohol reduces your body's ability to regulate core temperature and respond appropriately to heat stress.

That means the sauna can feel considerably more intense than normal, increasing the risk of overheating.

So When Is It Safe?

Most sauna researchers recommend waiting until:

• You are completely sober
• You've eaten a proper meal
• You've replaced lost fluids
• Your urine is pale in colour
• You no longer feel dizzy or nauseous

At that point, a short sauna session of around 10–15 minutes is generally better tolerated than a long, intense session.

If you feel faint, unwell or notice your heart racing excessively, leave immediately and cool down.

Best Practice if You Want to Sauna After Drinking

If you're considering using a sauna the morning after alcohol, these simple guidelines will reduce the risks:

• Never use a sauna while still intoxicated.
• Drink plenty of water before entering.
• Replace electrolytes if you've been sick or heavily dehydrated.
• Eat first rather than entering on an empty stomach.
• Limit your session to around 10–15 minutes.
• Cool down gradually.
• Leave immediately if you feel dizzy or faint.

Frequently Asked Questions

Does sweating remove alcohol from your body?

No. Around 90–98% of alcohol is metabolised by the liver. Only trace amounts are lost through sweat, urine and breath, so sweating more does not sober you up faster.

Can a sauna make dehydration worse?

Yes. Heavy sweating without replacing fluids can worsen dehydration, increasing headaches, dizziness and fatigue.

Is it safe to use a sauna while drunk?

No. Medical experts advise against using a sauna while intoxicated because alcohol increases the cardiovascular strain of heat exposure and impairs normal temperature regulation.

Does a sauna help a hangover headache?

It may help some people once they're fully rehydrated, particularly through muscle relaxation and improved circulation, but dehydration-related headaches often become worse if fluids haven't been replaced first.

The Verdict

A sauna is not a hangover cure, and it certainly doesn't remove alcohol from your body.

However, once you've fully sobered up, rehydrated and eaten properly, a short sauna session may help ease muscle aches, improve mood and promote relaxation. The key is timing. Using a sauna while still dehydrated or under the influence of alcohol carries genuine risks and is not recommended.

References

• Hannuksela, M. L., & Ellahham, S. (2001). Benefits and risks of sauna bathing. The American Journal of Medicine, 110(2), 118–126.
• Jari Laukkanen et al. (2018). Sauna bathing is inversely associated with cardiovascular disease and all-cause mortality: a review of the evidence. Mayo Clinic Proceedings.
• Joris C. Verster et al. (2020). The Alcohol Hangover: Current Concepts and Future Perspectives. Alcohol and Alcoholism.
• J. Roine et al. (1992). Effects of alcohol and sauna bathing on cardiac rhythm. American Journal of Cardiology.
• Mayo Clinic. Alcohol use, dehydration and heat exposure guidance.