Why you should use the sauna all year round – yes, even in summer

When you think of saunas, you probably picture a warm, wood-paneled room in the dead of winter – a soothing escape from the cold. But let's be clear: regular sauna sessions are not just a wellness ritual for the colder months. In fact, many of the most compelling benefits of infrared and traditional saunas are amplified by consistent, year-round use.

If you tend to interrupt your sauna routine in the warmer months, you might want to reconsider. Leading health experts and scientific studies now explicitly advocate for year-round sauna use – even as outdoor temperatures rise.

1. Heat conditioning strengthens your body's resilience

One of the most important reasons for year-round sauna use is the principle of heat conditioning. Regular heat exposure helps the body optimize its own temperature regulation. This has noticeable benefits, especially in summer.

Dr. Rhonda Patrick, a Ph.D. in biomedical sciences and founder of FoundMyFitness, explains that heat conditioning can increase blood plasma volume, improve cardiovascular efficiency, and boost general heat tolerance. This makes activities like outdoor sports or travel to hot regions significantly more comfortable [1].

"Heat stress from sauna bathing increases the production of heat shock proteins. These prevent the degradation and promote the repair of damaged proteins – which can contribute to longevity and better stress resistance."
— Dr. Rhonda Patrick

2. Year-round sauna use promotes heart health

Regular sauna use – not just in winter – is associated with better heart health. A groundbreaking study from the University of Eastern Finland tracked over 2,300 men for more than 20 years. The result: men who used the sauna 4–7 times a week had a 50% lower risk of dying from cardiovascular disease compared to those who used the sauna only once a week [2].

The study shows: the effect is cumulative – the more consistently you use the sauna, the greater the health benefits. Those who take a break in summer interrupt this building process.

3. Detoxification and skin care benefit in summer

Sweating is one of your body's natural detoxification mechanisms. The intense, deep sweating in an infrared sauna is one of the most effective ways to eliminate toxins such as heavy metals, BPA, and environmental pollutants.

Especially in summer, the skin is often particularly stressed by sunscreen, pollution, and high humidity. A sauna session can help cleanse pores, support lymphatic flow, and promote healthy, radiant skin – a natural summer detox from within [3].

4. Mental health and stress reduction – supported year-round

Whether winter blues or summer stress: sauna sessions support mental well-being. The calming effect of infrared heat promotes the release of endorphins and can help lower cortisol levels – the primary stress hormone.

A 2005 study shows that repeated thermal treatments can reduce depressive symptoms and subjective complaints in mildly depressed patients [4]. And because stress doesn't take a summer break, your sauna routine should also continue year-round.

5. Sleep better – even on hot nights

An often underestimated benefit of sauna use is improved sleep quality – especially in the warmer months when many people have trouble falling asleep.

According to Dr. Michael Breus, a clinical psychologist and known as "The Sleep Doctor," body temperature plays a crucial role in falling asleep. An evening sauna session first raises core body temperature, followed by a natural cooling that supports the natural sleep-wake rhythm. This can help you fall asleep faster and sleep longer [5].

"The drop in temperature after the sauna signals to the brain that it's time to sleep – even if it's hot outside."
— Dr. Michael Breus

Conclusion: Make sauna a year-round routine

Wellness doesn't stop in summer – and neither should your sauna sessions. Whether you want to sleep better, detoxify, promote your heart health, or simply cope better with everyday stress: the sauna is a powerful tool that unfolds its full potential through regular, year-round use.

Don't think seasonally, think holistically. Your sauna should be an integral part of your lifestyle – like healthy eating, exercise, and restorative sleep.

So go ahead – treat yourself to your sauna, even when the sun is shining outside.

Sources

• [1] Patrick, R. P. (2019). The ULTIMATE Guide to Saunas & Heat Exposure. FoundMyFitness.
  
• [2] Laukkanen, T., et al. (2015). Association Between Sauna Bathing and Fatal Cardiovascular and All-Cause Mortality Events. JAMA Internal Medicine, 175(4), 542–548.
  
• [3] Masuda, A., et al. (2005). The effects of repeated thermal therapy for patients with chronic pain. Journal of Psychosomatic Research, 58(1), 83–87.
  
• [4] Masuda, A., et al. (2005). Repeated thermal therapy diminishes appetite loss and subjective complaints in mildly depressed patients. Psychosomatic Medicine, 67(4), 643–647.
  
• [5] Breus, M. J., et al. (1998). Exercise-induced increase in core temperature does not disrupt a behavioral measure of sleep. Physiology & Behavior, 64(3), 213–217.