Sauna first or ice bath first? How to get the most out of contrast therapy

Should you start with the sauna or the ice bath? We'll cover the order, the benefits, and a simple contrast therapy protocol for home use.

It is one of the most common questions we get from individual customers and facilities that have just installed their first system: should you start with hot or cold? The answer isn’t as obvious as many people think—and the right order really does make a difference to both the experience and the result.

Here we'll go over what happens in the body, which order works best for which goals, and a simple protocol you can follow tonight.

Short answer: Start with the sauna

For most people, starting with the sauna and then moving on to the ice bath is the natural way to begin. Heat dilates the blood vessels, raises the heart rate, and helps the muscles relax. When you then step into the cold water, the body constricts the blood vessels again, and it is precisely this alternation between hot and cold that is the whole point of contrast therapy.

Finishing your workout in the cold also leaves you feeling sharp and alert afterward—a sensation many describe as almost euphoric. You simply don't want to end your session feeling warm and drowsy if you plan to stay alert for the rest of the day.

But—and this is important—there are times when you want to reverse it.

When to Finish in the Heat Instead

Do you work out late in the evening and want to be able to fall asleep afterward? Then it might be a good idea to end your workout with a sauna instead. Cold stimulates the body, whereas a relaxing session in the heat helps you wind down before bedtime.

The same applies if you're new to cold plunging. Stepping out of the ice bath and straight into a warm sauna makes the whole experience more manageable and helps your body recover faster between rounds. It lowers the barrier—and means you'll actually dare to do it again.

What actually happens in the body?

Contrast therapy involves deliberately exposing the body to changes in temperature. Heat and cold cause the blood vessels to constrict and dilate in a rhythm often likened to that of a pump.

In the sauna, body temperature rises, the heart rate increases, and the muscles relax. In the ice bath, the opposite happens: blood vessels constrict, breathing deepens, and the nervous system gets a thorough wake-up call. Many people report sharper focus, better sleep, and a sense of having pressed “reset” after a session.

It’s worth being honest about one thing: research on cold plunges and saunas is growing rapidly, but not everything has been settled yet. What we do know for certain is that contrast therapy, when done properly, feels good, is easy to turn into a habit, and that the habit itself is what produces results over time.

A simple protocol to start with

If you're new to this, we recommend keeping it simple for the first few sessions:

1. Sauna, 10–15 minutes. Sit there until you feel thoroughly warmed up and sweaty.
2. Ice bath, 1–3 minutes. Step in calmly and focus on long, controlled exhalations.
3. Rest for 2–3 minutes. Let your body recover before the next round.
4. Repeat 2–3 times. Finish in the cold if you want to feel alert, or in the heat if you want to wind down.

Never push yourself through discomfort in the ice bath. This isn't a competition to see how long you can last; it's about consistency. Three short, comfortable sessions a week are better than one heroic session that you then avoid repeating.

Common Mistakes to Avoid

Jumping right into the cold without warming up. It can be done, but for beginners it makes things unnecessarily difficult and increases the risk of giving up.

Staying in the ice bath for too long. More isn't better. The effect comes from the shock and the change, not from the number of minutes.

Forgetting to breathe. Your first instinct is to gasp. Long, calm exhalations are the difference between panic and control.

Don't make it a routine. The single most important factor for results is that you actually keep at it. Incorporate the sauna and the ice bath into your daily routine.

Sauna and ice bath at home — or at the facility

For private customers, the biggest hurdle is often a practical one: where do you put it, and how do you take care of it? Modern outdoor saunas and ice baths are designed for the Nordic climate and require less maintenance than most people expect—especially ice baths with built-in cooling and filtration systems, where the water stays clean without you having to change it constantly.

For hotels, gyms, and spa facilities, the combination of a sauna and an ice bath also offers clear added value for guests. Recovery has evolved from a niche offering to an expectation, and a well-designed contrast zone is often what encourages visitors to stay longer—and return.

Frequently asked questions

How often should you take a sauna and an ice bath? Two to four times a week is a good starting point for most people. Listen to your body and build up gradually.

How cold should the ice bath be? Many people find a temperature of around 8–12 degrees comfortable. If you're a beginner, you can start with a warmer temperature and lower it over time.

Can you take ice baths without using a sauna? Absolutely. The sauna enhances the experience and makes the cold more bearable, but ice baths work perfectly well on their own.

Is contrast therapy dangerous? For healthy people, it is generally safe, but if you have cardiovascular disease, are pregnant, or have other health problems, you should consult a doctor first.

Summary

Start with the sauna and finish in the cold if you want to feel alert—or in the heat if you want to wind down before bedtime. Keep the sessions short, breathe calmly, and do it regularly. It’s the rhythm and the habit that produce results, not heroic efforts.

Would you like to set up your own contrast zone at home or at your facility? Explore our saunas and ice baths here, or contact us and we’ll help you find the right solution.