The Science of Sweat: Infrared Sauna vs Traditional Sauna

At Bull City Soles, we frequently receive questions about our infrared sauna — especially from clients accustomed to the high heat of traditional steam saunas. One of the most common questions we hear is:

"Don't I need a higher heat to sweat — and for it to work?"

Let's break it down so you can understand how infrared saunas work, how they differ from traditional saunas, and why lower temperatures still deliver powerful health benefits.

When most people think of a sauna, they picture intense heat and buckets of sweat. But if you've ever stepped into an infrared sauna and wondered why it doesn't feel that hot, there's a reason — and it's a good thing. Unlike traditional steam saunas that heat the air around you, infrared saunas work by using far-infrared wavelengths that penetrate deeper into the body, offering powerful therapeutic benefits at lower temperatures.

#1: How They Heat Your Body

#2: Does Temperature Matter?

#3: "Why am I Not Sweating?"

#4: Benefits Beyond Sweat

#5: What to Expect & FAQ

---

How They Heat Your Body

Traditional Steam Sauna:

• Uses a stove or heater to warm the air, typically 150–195°F.

• The hot air heats your skin from the outside, which raises your core temperature and causes you to sweat.

  
  

Infrared Sauna:

• Uses far-infrared (FIR) light to heat your body directly, not just the air.

• The ambient air temperature stays lower—usually between 110°F 140°F—but the infrared waves penetrate deeper into your muscles, joints, and tissues.

This direct, deep heat is what makes infrared therapy so effective, even at lower temperatures.

Does Temperature Matter?

Yes — but maybe not in the way you think.

The therapeutic value of an infrared sauna doesn't come from cranking the heat as high as possible. It comes from optimal exposure to far-infrared wavelengths.

According to studies, Infrared sauna temperatures in the 115°F–125°F range allow for deeper tissue penetration and more effective detoxification — without overwhelming your system.

Source: Mayo Clinic Health System – Infrared Sauna Benefits

"Cranking the temp too high may reduce benefits by shortening the wavelength and moving it out of the ideal far-infrared spectrum. So, while it may feel gentler, your body is still working — and recovering — in powerful ways."

"Why Am I Not Sweating?"

If you're new to infrared saunas, it's totally normal to feel like you're not sweating much — especially during your first few sessions. That doesn't mean it's not working.

Several factors can affect your sweat response:

• Hydration: If you're dehydrated, your body may not sweat efficiently.

• Circulation: Poor circulation or a sluggish metabolism can delay your response to infrared heat.

• Consistency: Some bodies need multiple sessions to "learn" how to sweat in this new environment.

  
  

• Medications or Medical Conditions: Certain drugs or health issues can suppress sweating.

• Detox Pathways: Clogged pores or a sluggish lymphatic system may limit sweat until your body recalibrates.

With regular use, most clients notice that they begin to sweat more easily and deeply — sometimes within 10 minutes, especially if they're well-hydrated. Read our blog about the importance of staying hydrated.

Benefits Beyond Sweat

We've covered the many benefits of infrared sauna therapy in a previous post, from reduced inflammation to improved sleep and skin clarity. If you're curious about the full range of therapeutic effects, we recommend checking out our earlier blog: Infrared Sauna: The Health Benefits.

Here, we want to emphasize that even before you begin sweating, your body is already benefiting. The infrared heat penetrates deeply into muscle and connective tissue, supports circulation, and helps your body shift into a state of recovery and relaxation — even at lower temperatures.

What to Expect & FAQ

Curious about infrared sauna therapy? Here's what to know before your first session — and how to make the most of it.

Do I need to prepare beforehand?

Yes. Hydration is key. Drink plenty of water before your session to support sweating and detox. We also have cold beverages like coconut water and LMNT available on-site.

What happens during a session?

You'll relax in our recovery room while the infrared sauna gently warms your body as the heat builds gradually. Well-hydrated clients often begin sweating within 10 minutes; others may take closer to 15–20 minutes. Sessions typically last 30–45 minutes, including time to cool down and rehydrate afterward. You can this time to meditate, read, or rest — it's your space to unwind.

What if I don't sweat much?

It's normal — especially at first. Your body may need several sessions to adjust. Even before you start sweating, you're still absorbing infrared energy and triggering cellular and circulatory responses that aid recovery and detox.

Can I combine a sauna with other services?

Absolutely! The sauna compliments our massage and Rolfing® Structural Integration sessions — either before bodywork to loosen tissue or after to extend the benefits.

We also offer a cold plunge for contrast therapy, which gives your system a powerful reset by alternating heat and cold—ideal for boosting circulation and speeding up muscle recovery.

Is it safe for everyone?

Most people tolerate infrared sauna therapy very well. However, if you're pregnant, have heart conditions, or take medications that affect sweating or blood pressure, consult your doctor first.

Ready to try it?

Ask us about adding an infrared sauna session — or a full contrast therapy experience — to your next massage or bodywork appointment. At Bull City Soles, we're here to help you sweat smarter, recover faster, and feel your best.