Sauna therapy may help relieve chronic pain, muscle stiffness, and soreness by exposing the body to sustained heat that promotes relaxation, increases circulation, and may influence how pain is perceived. Research has found promising results for several conditions, including fibromyalgia, rheumatoid arthritis, ankylosing spondylitis, low back pain, and tension headaches.
For centuries, people have used heat to relax sore muscles and stiff joints. Modern research is now exploring how controlled heat exposure, including sauna therapy, may support people dealing with persistent discomfort.
Sauna is best viewed as a complementary approach to pain management, rather than a replacement for medical care. With that in mind, the findings so far offer some encouraging insights into how sauna may help people feel more comfortable.
How Sauna Heat May Help With Chronic Pain
Several changes happen in the body during sauna exposure that may contribute to pain relief.
Muscle Relaxation
Heat can help loosen tight muscles and reduce the sensation of stiffness. This can be particularly helpful when chronic pain is accompanied by muscle tension or restricted movement.
The relaxing environment of a sauna may also help reduce physical tension caused by stress. After a session, some people may find that their muscles feel looser and everyday movement feels more comfortable.
Increased Circulation
Exposure to high temperatures causes blood vessels to widen, increasing blood flow throughout the body. Improved circulation is one reason heat is commonly used for sore and stiff muscles. Increased blood flow delivers oxygen and nutrients to tissues while helping transport metabolic waste away from them.
Unlike a heating pad that targets one specific area, sauna provides this warming effect throughout the body.
Changes in Pain Perception
Heat can also affect the nervous system and the way the body processes sensory signals. This may help explain why warming the body can temporarily reduce the perception of pain.
While the underlying source of chronic pain may remain, changing how the nervous system responds to discomfort can make symptoms feel more manageable.
Relaxation and Stress Reduction
Pain and stress often influence one another. Persistent discomfort can increase stress, while stress and poor sleep can make pain feel more noticeable.
A sauna provides a period of warmth and quiet relaxation that may help break that cycle. For people whose pain is accompanied by muscle tension or stress, this relaxing effect can be an important part of the experience.
Sauna for Arthritis Pain
Sauna therapy has been studied in people with rheumatic conditions, including rheumatoid arthritis and ankylosing spondylitis.
A study published in Clinical Rheumatology examined 17 people with rheumatoid arthritis and 17 people with ankylosing spondylitis who received eight infrared sauna treatments over four weeks.
The researchers found that pain and stiffness decreased significantly during the sauna sessions, while participants also reported reductions in fatigue. The treatments were well tolerated, with no disease exacerbation reported during the study.
These findings suggest that infrared sauna may provide short-term relief from arthritis-related discomfort and stiffness.
Why Heat May Feel Good for Stiff Joints
Anyone who has experienced stiff joints after sitting for a long time knows how much warmth can change the way the body feels.
Heat can make surrounding muscles feel more relaxed and may make gentle movement easier. For people experiencing arthritis-related stiffness, using warmth before stretching or other comfortable movement may be particularly appealing.
Sauna and Fibromyalgia
Fibromyalgia involves widespread pain and can also be associated with fatigue, sleep difficulties, and increased sensitivity to physical sensations. Because heat can encourage relaxation and influence pain perception, researchers have investigated whether sauna-based treatments could help people with fibromyalgia.
One study examined Waon therapy, a specific form of far-infrared sauna treatment. Participants spent 15 minutes in a 60°C sauna before resting while remaining warm. Researchers found significant reductions in participants’ reported pain following treatment. Improvements were also observed in other fibromyalgia-related symptoms.
Another study combined sauna therapy with underwater exercise in people with fibromyalgia. After a 12-week program, participants reported improvements in pain, symptoms, and quality of life.
These findings make heat therapy an interesting area of research for people looking for additional ways to manage fibromyalgia symptoms.
Sauna for Chronic Back Pain
Low back pain is another area where sauna therapy has shown promising results. A study published in Anesthesia and Pain Medicine followed 37 adults with low back pain who completed 10 dry sauna sessions over one week. Each session lasted 15 minutes at 90°C.
Following the treatment period, participants reported lower pain scores and improved scores for physical disability. Median pain scores decreased from 5 before treatment to 3 afterward.
Heat may be particularly comfortable for people whose back pain is accompanied by muscle tightness. Warming the body can make gentle mobility exercises or stretching feel easier afterward.
Can Sauna Help With Muscle Pain and Soreness?
Sauna doesn’t have to be reserved for people with a diagnosed chronic pain condition. Muscle soreness and stiffness can develop after exercise, physical work, long periods of sitting, travel, or repetitive activities. Heat can help muscles relax and provide a comfortable way to unwind after physically demanding activities.
For active people, sauna can be incorporated into a broader recovery routine alongside:
- Adequate sleep
- Proper hydration
- Good nutrition
- Gentle mobility work
- Stretching
- Appropriate rest
The goal is to use heat as one part of recovery rather than relying on it alone.
Sauna for Tension Headaches
Sauna may also be useful for people whose headaches are associated with muscle tension.
A randomized controlled study involving people with chronic tension-type headaches found that the sauna treatment group experienced a 44% reduction in headache intensity after six weeks. The improvement was significantly greater than that of the control group.
Tension headaches can involve tightness around the neck, shoulders, and upper back. Because sauna encourages relaxation and can help loosen tense muscles, it may be particularly useful for people whose headaches are connected to muscular tension.
Headaches have many possible causes, however, so heat won’t necessarily provide the same benefit for every type of headache.
How to Use Sauna as Part of a Pain-Management Routine
If you’re interested in trying sauna for chronic pain, start with sessions that feel comfortable rather than trying to tolerate as much heat as possible.
- Start gradually
New sauna users can begin with shorter sessions and gradually become accustomed to the heat. There’s no benefit to forcing yourself to remain in the sauna when you feel uncomfortable.
- Stay hydrated
Sauna causes sweating and fluid loss, making hydration an important part of any sauna routine. Drink water before and after your session, particularly after exercising or spending an extended amount of time in the heat.
- Pair heat with gentle movement
If stiffness is your main concern, gentle stretching or mobility work after warming up may feel more comfortable. Keep movements controlled and avoid forcing a painful stretch.
- Allow time to cool down
After leaving the sauna, give your body time to cool naturally. Sit somewhere comfortable, drink water, and allow yourself to relax before returning to strenuous activity.
How Often Should You Sauna for Pain?
There isn’t one established sauna schedule specifically for chronic pain. Research studies have used different frequencies depending on the condition and type of heat therapy being studied. Some involve several sessions per week, while others use more concentrated treatment periods.
For general sauna use, frequency can depend on your comfort level, health, and overall routine.
The goal isn’t to spend as much time in the sauna as possible. Regular, comfortable sessions are a more practical approach than pushing yourself through excessively long sessions.
Sauna Safety for People With Chronic Pain
Sauna is well tolerated by many healthy adults, but some people should consult a healthcare professional before beginning regular sauna use.
This includes people with:
- Cardiovascular conditions
- Uncontrolled blood pressure
- Conditions affecting temperature regulation
- Frequent dizziness or fainting
- Recent major injuries or surgery
- Serious or uncontrolled medical conditions
Avoid sauna while under the influence of alcohol, and leave the sauna if you experience dizziness, nausea, weakness, or other concerning symptoms. If chronic pain is new, severe, or worsening, it’s important to have the cause evaluated rather than relying solely on heat for relief.
Sauna vs. Other Heat Therapies
Sauna is one of several ways to use heat for muscle and pain relief.
| Heat Therapy | Common Use |
| Sauna | Full-body warmth, relaxation, muscle stiffness |
| Heating pad | Targeted areas such as the back or shoulders |
| Warm bath | Muscle and joint relaxation |
| Hot tub | Heat combined with water immersion |
| Warm shower | Quick relief from everyday muscle tension |
The main difference is that sauna provides whole-body heat exposure. A heating pad may be more practical when discomfort is limited to one area, while a sauna can provide a more comprehensive warming and relaxation experience.
What the Research Shows
The research so far points to several potential benefits:
| Condition | Research Findings |
| Rheumatoid arthritis | Infrared sauna was associated with reduced pain and stiffness. |
| Ankylosing spondylitis | Participants experienced reductions in pain and stiffness. |
| Fibromyalgia | Sauna-based heat therapy was associated with reduced pain and improved symptoms. |
| Low back pain | Dry sauna was associated with lower pain and improved physical function. |
| Tension headaches | One study found a 44% reduction in headache intensity after six weeks. |
| Muscle stiffness | Heat can promote relaxation and make tight muscles feel more comfortable. |
The Bottom Line
Research suggests that sauna therapy can help some people manage chronic pain, muscle stiffness, and soreness, particularly when discomfort is associated with conditions such as arthritis, fibromyalgia, low back pain, or muscle tension.
The effects seen in research vary depending on the condition and type of sauna therapy, but the overall findings provide an encouraging reason to explore heat as part of a broader approach to pain management.
For many people, the appeal of sauna is simple: warmth helps the body relax, loosens stiff muscles, and can make discomfort feel less noticeable. Whether you’re recovering from physical activity, dealing with everyday muscle stiffness, or looking for additional ways to manage chronic discomfort, sauna may be a useful addition to a well-rounded wellness routine.
