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August 11, 2025

Do infrared saunas burn calories?

Weight Loss

Infrared saunas are becoming increasingly popular for their wellness benefits—detoxification, improved circulation, stress relief, muscle recovery and longevity. But one question people often ask is: do infrared saunas burn calories? While sitting in a sauna isn’t the same as hitting the gym, there’s evidence that using an infrared sauna can lead to a modest increase in calorie expenditure. In the following article, we’ll break down your burning questions about infrared saunas, weight loss, and how they can be a useful tool on your wellness journey. 

Infrared saunas and weight loss

When it comes to weight loss, the key drivers are diet, exercise, overall lifestyle, and even genetics. Adding an infrared sauna to your wellness routine can add fuel to your weight loss by slightly increasing calorie burn during your sessions.  

Here’s how it works: 

Traditional saunas heat the air around you, while infrared saunas use infrared light to directly heat your body, raising your core temperature without making the room uncomfortably hot. This increase in body temperature causes your heart rate to rise—similar to the effects of light and moderate exercise. The result? Your body works a little harder, expends more energy, and that effort burns calories.  

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However, it’s important to note that the initial weight you may notice after an infrared sauna session often comes from water loss due to sweating. Once you rehydrate, that weight will return. The long-term benefits of infrared saunas come from consistency in supporting your overall wellness routine and recovery.  

How infrared saunas burn calories

When exposed to infrared light, your core temperature rises. This triggers: 

  • Increased heart rate and circulation, mimicking the effects of low-intensity exercise. 
  • Elevated metabolism, as your body works harder to regulate temperature.  
  • Sweating and detoxification, which help flush out some toxins but don't directly burn calories. 

How many calories can infrared saunas burn?

The exact calories an infrared sauna can burn depends on your body weight, metabolism, session duration, and sauna temperature. But research has shown infrared saunas provide a significant boost in calorie burn, equivalent to light to moderate exercise.  

What is scientifically supported: Infrared sauna use increases heart rate, circulation, and metabolic activity, but individual calorie burn will vary and likely be less than intense physical exercise. 

Infrared therapy should never be seen as a replacement for exercise or a healthy diet. Instead, consider it a powerful supplement to your wellness routine, helping to boost your metabolism and promote recovery between workouts. 

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WRITTEN BY: Sunlighten

Shining light on infrared technology, Sunlighten® is the #1 choice for personalized infrared light treatments. Since 1999, we have been committed to innovating wellness products and services that empower our customers to improve their quality of life. Our patented SoloCarbon® technology rejuvenates the body by delivering the highest dose of infrared energy to the body - proven up to 99% effective. Our technological innovations are fueled by our passion to make a difference. And we are building a global community of businesses, consumers, and trusted experts to support each other along the way and make the world a healthier, happier place.

Sunlighten saunas are not a medical device as defined by Section 201(h) of the Food, Drug & Cosmetic Act. Sunlighten provides general information relating to various medical conditions for informational purposes only and is not meant to be a substitute for advice provided by a doctor or other qualified health care professional. Please consult with your physician regarding diagnosis or treatment.