How Often You Should Use an Infrared Sauna

For general wellness, most guidance points to three to four infrared sauna sessions a week lasting for between 20–40 minutes at temperatures of 120–140°F. That’s the range Health Mate cites as comfortable. Research shows the strongest health benefits from sauna use come from those who do four to seven sessions a week. If you're new to saunas, start at 10–15 minutes and build up while staying hydrated.

The short answer: a protocol determined by goals

What the evidence says about frequency

The most-cited data comes from the long-running Finnish Kuopio study. That study found that the benefits of sauna scale with how often you go. People who used a sauna two to three times a week saw more benefits than those who used a sauna once a week. In fact, those who use a sauna four to seven times a week saw the most benefits, including those associated with cardiovascular health.

Keep in mind that these are associations rather than proof, and they come from traditional saunas. That said, the findings point in a clear, consistent direction: consistency pays off.

Session length and temperature

Because infrared warms your body directly rather than heating the air, it works at lower, more comfortable temperatures than a traditional sauna would.

Most infrared sauna users settle into the 120–140°F range and stay for 20–40 minutes. You don't need to chase extreme heat or to tough out a marathon session. Indeed, a comfortable 30-minute sauna session you'll happily repeat beats a brutal 15-minute session you come to dread.

A rule to follow: if you ever feel unwell, the session is over. Let your comfort guide you, not a stopwatch or a thermostat.

If you're just starting out

Ease in. Build up gradually. Begin with 10–15 minutes at the lower end of the temperature range, two or three times a week, and add a few minutes over time. Your body acclimates to heat over a few weeks, as your plasma volume rises and you regulate temperature better, so patience pays off later. There's no prize for overdoing it in week one.

Building it into your week

A simple, sustainable schedule beats an ambitious one you abandon after a few weeks. Most people fall into a routine like this: three to four sessions spread across the week, placed where they fit your life. If you exercise, schedule your sauna sessions after workouts or on rest days.

If you're using the sauna to wind down, an evening session at cooler/less hot temperatures works well and can help with sleep. Remember, routine is what turns the sauna from a novelty into a genuine health habit.

Timing around exercise, meals, and sleep

Around exercise, after training is the best time to use a sauna so the heat doesn't sap your workout.

Avoid a heavy meal right before using a sauna, as you want to give digestion some space.

Sure, an evening session can be relaxing, but finish with enough time to cool down before bed. After all, going to bed overheated can disrupt sleep for some people.

Signs you're overdoing it

More isn't always better when it comes to sauna use. Dizziness, lightheadedness, nausea, a pounding heart, or feeling drained for hours afterward signal that you should shorten sessions, lower the temperature, or go less often.

Sauna use should leave you relaxed and refreshed, not wiped out. If you consistently feel worse rather than better after spending time in a sauna, scale back and check in with a doctor.

Staying safe

Hydrate before and after. You'll lose fluid through sweat, and starting a session dehydrated is asking for trouble.

Don't push through dizziness. If you feel dizzy, step out and cool down. Skip alcohol before or during your sauna session.

And talk to your doctor first if you're pregnant, have a heart condition, or take medication that affects how your body handles heat.

Morning or evening?

The answer depends on your schedule. A morning session can feel energizing and set a calm tone for the day. An evening session leans into relaxation and, for many people, helps with winding down before sleep. If you use a sauna in the evening, be sure to leave enough time to cool off, since going to bed overheated can backfire.

Making it stick

The hardest part of any wellness habit is consistency, and using a sauna is no different. Two things help. First, stack it onto something you already do. For many, that means using a sauna after a workout, after a shower, and at the same time each evening.

That way, sauna usage is connected to your existing routine rather than competing for a new slot or throwing your entire schedule off.

Second, keep early sessions short and pleasant so the habit takes hold. Once it's part of your week, you can start receiving the rewards of continual use.

Who should be extra cautious?

Some people should ease in more slowly and talk to a doctor first. That includes those who are pregnant, anyone with a heart condition or low blood pressure, older adults, and people on medications that affect how the body handles heat or fluids.

None of this means the sauna is off-limits for those people. It does mean you should start shorter and cooler, stay well hydrated, and get medical clearance when warranted. When in doubt, go gentle and ask a professional.

The bottom line

The honest answer to "how often" is: often enough to be a habit, and comfortable enough that you stick to that habit.

Three to four 20–40-minute sessions a week at 120–140°F is a strong, sustainable target for most people, and more frequent use is linked to greater benefits in the research. Start short and cool if you're new, hydrate, listen to your body, and get medical clearance if you have a condition. Consistency, and not heroic, brutal sessions, is what turns a sauna into a real part of your health routine.

FAQ

Can you use an infrared sauna every day? Many people do, at moderate sessions. Daily use is common and generally well tolerated. Listen to your body and stay hydrated.

How long should a beginner stay in an infrared sauna? Start with 10–15 minutes and build up over a few weeks.

What temperature should an infrared sauna be? Most users find 120–140°F comfortable and effective.

Is it OK to sauna at night? Yes. An evening session at the cooler end can help you unwind; just leave time to cool down before bed.

How much water should I drink? Enough to replace what you sweat out. A glass or two before and after is a sensible baseline; more for longer sessions.

This article is for general wellness education and is not medical advice. Sauna use supports wellness but is not a treatment for any medical condition. Consult a healthcare provider before starting sauna use, especially if you are pregnant or have a cardiovascular condition.