Sauna: What It Is, How Different Types Compare, and How to Use One Safely

What is a sauna?

A sauna is a heated room designed for intentional heat exposure, dry heat, often with a burst of steam when water hits hot stones. The word is Finnish, and sauna culture runs so deep in Finland that the country has roughly 3.3 million saunas for 5.5 million people. UNESCO added Finnish sauna to its Intangible Cultural Heritage list in 2020. ¹

“Sauna” can mean several very different things today: a classic Finnish hot room, a lower-temperature infrared cabin, a steam room people casually lump into the same category, a backyard barrel sauna, or even a portable blanket you zip yourself into at home. The smartest first question is not “Is sauna good?” but “What kind of sauna are we talking about?”

What are the main types of saunas?

The main types differ by how they create heat, how humid the air feels, and whether you are choosing a heat style, a shape, or a portable device. One useful shortcut: infrared is a heating method, barrel is a shape, and steam room is a different wet-heat experience people often compare with saunas.

What is a traditional Finnish sauna?

A traditional Finnish sauna is the classic hot, wood-lined room most people picture when they hear “sauna.” It typically runs 150 to 195 F (65 to 90 C), the air starts dry, and the whole character of the room shifts when water is ladled onto hot stones, a rush of soft, wet heat the Finns call loyly. This is the sauna format behind most of the long-term health research. ²

In practice, a traditional sauna feels crisp, intense, and simple. The air smells like warm cedar, the stones tick and hiss when water hits them, and the heat wraps around you in waves. You sit on tiered benches (upper benches are hotter), and most people do two or three rounds with cooling breaks in between. If you want the full ritual, hot room, quiet, steam from stones, cold air between rounds, this is where to start. ³

What is an infrared sauna?

An infrared sauna uses panels that warm your body directly instead of superheating the air around you. Temperatures are lower, around 110 to 135 F (43 to 57 C), which is why many people find infrared more approachable even though they still sweat heavily. ⁴

The feel is noticeably different from traditional sauna. Instead of stepping into a wall of hot air, you get a gentler room temperature with a deep, radiating warmth that builds steadily under your skin. Infrared is an excellent choice if you want real heat therapy benefits at more comfortable temperatures, prefer a home setup with simpler electrical needs, or find traditional sauna’s intense dry heat hard to sit through.

How does a steam room compare to a sauna?

A steam room is not the same thing as a traditional sauna, even though people compare them constantly. Steam rooms are cooler, usually around 110 to 120 F, but dramatically more humid, often 95% to 100% humidity. The heat feels heavier, wetter, and thicker in your lungs. ⁵

Some people love that enveloping, moist heat, like being wrapped in a warm cloud. Others find it harder to tolerate because sweat does not evaporate as easily, making the room feel stifling even at a lower temperature. If dry heat feels harsh on your skin and throat, steam may be the better choice. If you prefer a cleaner, woodier, more breathable heat, traditional sauna usually wins.

What is a barrel sauna?

A barrel sauna refers to the shape, not a separate heat category. Most home barrel models are outdoor traditional saunas with an electric heater or stove, stones, benches, and the same heat experience as other traditional units. ⁶

What barrel buyers are really choosing is the outdoor experience and the look: cedar, curved walls, backyard placement, and often room for two to six people. There is something special about stepping out of a 180-degree barrel into cold night air. If you like the idea of a proper hot room outside rather than an indoor cabin, barrel saunas are usually where that search leads.

What are portable and blanket saunas?

Portable saunas are compact, solo options built for convenience rather than tradition. Tent-style models fold away after use, while sauna blankets wrap around your body with adjustable heat and timer settings. Portable tents typically run $100 to $300 and sauna blankets around $300 to $400, with blankets commonly reaching about 176 F. ⁷

They make sense if your priorities are low cost, small space, and easy storage. What they will not give you is the roomy, social, bench-based feel of a full sauna room. Think of them as convenient personal heat devices, a solid way to sweat at home, not a one-to-one replacement for a proper Finnish session.

What does a sauna session actually feel like?

The first minute or two feels almost too hot. Your skin prickles, your heart rate picks up, and there is a brief “this is a lot” moment. Then something shifts. Your muscles loosen, your breathing slows, and a deep, heavy calm settles in, the feeling that keeps people coming back for years. ⁸

Your heart rate can climb to roughly 120 to 150 beats per minute (similar to a moderate walk), and a single session can wring out about a pint of sweat. You feel hot, flushed, sweaty, and loose. What you should not feel is trapped, panicky, faint, or determined to “tough it out.” Any of those is your cue to step out.

What are the health benefits of using a sauna?

Sauna delivers real, measurable health benefits that go far beyond “it feels nice.” Regular users report better sleep, lower stress, faster recovery from exercise, and an overall sense of well-being, and large-scale research backs them up.

The strongest evidence is for cardiovascular health. Regular sauna use lowers blood pressure, reduces stiffness in your arteries, and is linked to dramatically lower rates of heart disease. A landmark Finnish study following over 2,000 men for 20 years found that those who used sauna 4-7 times per week had a 63% lower risk of sudden cardiac death and a 40% lower risk of dying from any cause compared to once-weekly users. Beyond the heart, sauna reduces chronic pain, supports immune resilience, improves mood, and protects brain health over time. For the full research breakdown, see our detailed guide to the health benefits of sauna. ⁹

How do you use a sauna for the first time?

Start shorter and cooler than you think you need. The benefits build over weeks of consistent use, not from a single heroic session. For most beginners, 5 to 10 minutes is a great first round, and you can work up to 15-20 minutes over a few sessions.

A simple first session looks like this: shower first, enter the sauna dry or lightly towel-dried, sit on a lower bench, and leave when you feel deeply hot rather than overwhelmed. Cool down with room-temperature air, a shower, or a few minutes outside. Rest a bit, and only do a second round if you still feel good. Most people naturally settle into two or three rounds over time. ¹⁰

Hydration matters more than bravado. Stick to 15-20 minutes per round, cool down gradually, and drink two to four glasses of cool water after each session. Skip the alcohol before or during sauna; it increases dehydration risk and can turn a relaxing session into a dizzy, unpleasant one. ¹¹

For clothing, follow the room you are in. In many mixed public saunas, a swimsuit or towel is normal. In some same-sex saunas, nudity is standard and swimsuits are actually discouraged; a towel is often fine. At home, do whatever feels comfortable. ¹²

What sauna etiquette should you know before your first visit?

Be clean, be considerate, and follow the room’s lead. Shower before you enter, sit on a towel or seat cover, and assume the people around you are there for quiet as much as heat. ¹⁰

Nudity norms vary more than first-timers expect. In Finnish culture, nudity in the sauna is normal and not sexual, but many mixed public saunas allow swimsuits or towels, and some facilities have their own dress code. When in doubt, check the rules before you walk in.

Ask before adding more water to the stones, keep conversation low, and leave your phone outside. Sauna is one of the last places where screens genuinely do not belong, and most regulars will tell you the experience is better for it. ¹³

How does a sauna differ from a steam room?

A sauna is hotter and drier, while a steam room is cooler but almost fully humid. In practice, sauna feels cleaner, sharper, and easier to do in rounds, while a steam room feels softer on the airways but heavier and wetter overall. ⁵

Choose sauna when you want classic dry heat, the wood-and-stone ritual, and more control over intensity. Choose steam when you prefer moist heat and want the room to feel enveloping rather than crisp. Neither is universally “better”; they are different experiences that suit different people.

What should you know before buying a home sauna?

Pick the heat style first, then figure out the space, power, and budget. A small infrared cabin is a very different purchase from an outdoor barrel sauna: different feel, different electrical needs, different footprint, and usually different installation effort. ⁴

For space and power: many smaller infrared units plug into a standard 120V household outlet, while larger traditional or outdoor models need 4.5 kW to 9 kW heaters and 240V service. ¹⁴

As of April 2026, the broad price landscape looks like this: sauna blankets around $294 to $400; portable steam tents around $94 to $331; 1- to 2-person infrared cabins roughly $1,299 to $3,969; indoor traditional units around $2,299 to $3,698; and outdoor barrel saunas commonly around $3,999 to $5,440, with larger models running higher. ¹⁵

The simplest way to think about it: if you want the classic sauna experience, look at traditional indoor or outdoor models. If you want easier setup and lower temperatures, look at infrared. If you want low commitment and a tiny footprint, portable tents or blankets are the entry point.

Who should be careful with sauna use?

Sauna is safe for the vast majority of healthy adults; billions of sessions happen every year without incident. The few groups who should be careful are pregnant women (due to overheating risk, especially in the first trimester), people with unstable heart conditions or recent cardiac events, and anyone combining sauna with alcohol or medications that affect sweating. ¹¹

For everyone else, the guidelines are simple: hydrate well, keep sessions to 15-20 minutes, and step out if you feel dizzy, faint, or unwell. Sauna should feel like a satisfying challenge, not an endurance test.

If you are interested in how sauna fits into a broader recovery routine that includes cold exposure, our guide to contrast therapy covers how alternating heat and cold works in practice.

Frequently Asked Questions

Can I use a sauna every day?

Yes. In Finland, daily sauna is the norm, and the Finnish population’s exceptional heart-health statistics are part of what drew researchers to study sauna in the first place. For healthy adults, daily sessions are safe and well-supported by both tradition and research. Just stay hydrated and listen to your body. ¹⁶

How long should a sauna session last?

15 to 20 minutes per round for experienced users, with beginners starting at 5 to 10 minutes. Cool down gradually afterward and drink two to four glasses of cool water. Most people find their sweet spot after a handful of sessions. ¹¹

Should I shower before or after a sauna?

Both. Shower before to keep the sauna clean and pleasant for everyone, and shower after your final round to rinse off sweat. A quick rinse between rounds is common practice in Finnish sauna culture. ¹⁰

Is it normal to feel dizzy in a sauna?

A little lightheadedness can happen if you stay too long, stand up too fast, or are underhydrated, but it is not something to push through. Step out, sit down, cool off, and drink water. If the dizziness is strong, persistent, or comes with chest pain or fainting, get medical help. ¹¹

Can kids use a sauna?

Yes. Finnish families have been bringing children into the sauna for centuries, and it is a completely normal part of childhood in Finland. Kids do need shorter sessions at lower temperatures since their smaller bodies heat up faster. Keep it brief, supervised, and at a comfortable temperature, and always let them leave whenever they want. ¹⁷

Is an infrared sauna as effective as a traditional Finnish sauna?

Both deliver real benefits. The strongest long-term heart-health and longevity data comes from traditional Finnish sauna research, while infrared sauna has shown strong results for chronic pain, heart failure symptoms, and mood at lower, more comfortable temperatures. Infrared produces meaningful benefits that millions of regular users experience firsthand; the formal research is simply newer and still catching up. ⁴

Do I need a cold plunge after sauna?

You do not need a cold plunge to get the benefits of sauna; the cardiovascular and recovery effects come from the heat exposure itself. That said, many people find the hot-cold contrast deeply invigorating, and contrast therapy has its own evidence base for recovery and circulation. If you enjoy it, do it. If you prefer heat only, the core benefits are fully intact.

Can I bring my phone into a sauna?

You technically can in some places, but you usually should not. Heat and humidity are rough on electronics, and many sauna cultures treat the room as a device-free, low-distraction space. Leaving your phone outside is both better for the device and better for the experience. ¹³

Is sauna better before or after a workout?

After. Post-workout sauna is the better-studied and more effective approach: it accelerates recovery and helps your body shift into repair mode while you are already warm. Runners who added sauna after training improved their endurance through better heat tolerance and increased blood volume. Doing sauna before hard training raises your heart rate and dehydration risk before you have done anything useful.

Can I use a sauna when I am sick?

Skip it if you have a fever; your body is already running hot and adding external heat stresses it further. For mild congestion without fever, a short session can help open the sinuses and provide temporary relief. The bigger picture: regular sauna use builds respiratory resilience over time. Frequent sauna bathers have significantly lower rates of respiratory disease and pneumonia. The best strategy is to use sauna consistently when you are well so your body is stronger when illness does come around. ¹¹