What Happens to Your Brain During a Sauna Session
Posted on 16 June 2025
A sauna can offer a rather intense physical experience to those who choose to endure a 10-20 minute session. Most people often associate sauna use with physical health benefits and muscle recovery. What many users fail to acknowledge is that spending time in your cabin sauna actually impacts your brain as well. Sauna use has been shown to have a profound effect on the brain, neurotransmitters, and overall mental health, making it an excellent tool to support well-being. Investing in a DIY sauna kit from a reputable sauna company will give you the opportunity to reap these benefits from the comfort of your own home. Visit SaunaFin’s homepage today to build a free quote!
Here is a breakdown of how sauna use impacts the brain.
The Hypothalamus’s Response to Sauna Heat
The hypothalamus is a part of the brain that is often referred to as the body’s thermostat, as it receives signals from other parts of the body and helps you adapt to the environment. So when you step into the sauna, the hypothalamus triggers your body to sweat to help cool your body down when exposed to excessive heat. The hypothalamus is also responsible for vasodilation that occurs during sauna sessions, as this increases blood flow, allowing for more heat loss from the body. Overall, the hypothalamus is responsible for your sauna symptoms, as this is its way of cooling down the body.
Neurochemical Changes
During a sauna session, heat exposure can trigger the release of various neurotransmitters, resulting in neurochemical changes in the brain.
Dopamine and Serotonin Release
Heat exposure in saunas has been shown to stimulate the release of neurotransmitters such as dopamine and serotonin. Serotonin plays an important role in many bodily functions such as sleep, digestion and mood. Increased serotonin levels can contribute to restful sleep and improved mood. Dopamine is often referred to as a feel-good hormone since it impacts mood, motivation and attention. Increased dopamine is associated with happiness and decreased stress.
Cortisol
Cortisol is your primary stress hormone, and elevated levels are associated with weight gain, anxiety and mood swings. Extreme heat is a physical stressor that can trigger an increase in cortisol levels in the brain. Although cortisol levels are primarily elevated, they actually fall below baseline levels once your body temperature returns to normal. This can help improve chronic stress and anxiety.
Brain-Derived Neurotrophic Factor
Sauna use is also associated with an increase in brain-derived neurotrophic factor (BDNF). BDNF is a protein that is essential for the growth, development and health of neurons in the brain. This protein can also help support memory and learning capabilities.
Start Your Journey with a SaunaFin Cabin Sauna
While the physical benefits of sauna sessions are well-known, the positive impact on your brain and mental health is equally powerful. Regular sauna use supports relaxation, stress relief, and improved brain function. By investing in a quality DIY sauna kit, you can enjoy these cognitive effects right at home. If you are ready to invest in your mind, look into reputable sauna companies. Visit SaunaFin’s homepage today and get your free quote and start your wellness journey.
