Saunas have long been used for their therapeutic benefits, and one of the most widely reported is pain relief. Whether you are dealing with muscle soreness after exercise, joint stiffness or persistent discomfort, heat therapy is a natural, non-invasive way to feel more comfortable — alongside, not instead of, whatever treatment you are already under.
How Saunas Help Relieve Pain
- Increased blood flow and circulation. Heat from the sauna dilates blood vessels, improving circulation and bringing oxygen-rich blood to areas of discomfort. This supports the body's own recovery processes, which is particularly useful for muscle recovery and for easing stiffness after training.
- Relief from joint and muscle stiffness. For people living with arthritis or persistent joint pain, sauna heat is often soothing. Warmth eases stiffness and makes movement more comfortable. Many people with conditions such as fibromyalgia or osteoarthritis report that heat therapy helps with symptoms — it eases how the condition feels rather than treating the condition itself.
- Endorphin release and relaxation. Time in a sauna stimulates the release of endorphins, the body's own analgesic chemicals. That reduces the sensation of pain and produces a sense of calm, offering both physical and emotional relief.
- Muscle soreness after exercise. Sauna therapy is a popular post-exercise tool: the heat relaxes tight muscles, improves the comfort of moving, and makes the hours after a hard session more pleasant. Note that the old idea of "flushing out lactic acid" does not hold up — lactate clears on its own within about an hour and is not what causes delayed-onset soreness. The benefit is comfort and relaxation, which is worth having on its own terms.
- Infrared for lower-temperature sessions. Infrared cabins warm the body at much lower air temperatures than a traditional sauna, which makes a longer, gentler session easier to sit through. For anyone who finds 190°F uncomfortable, that is often the more practical route to regular heat therapy.
What the Research Suggests
Several small studies have looked at heat therapy and pain. A 2009 study published in the Journal of Clinical Rheumatology reported that patients with rheumatoid arthritis and ankylosing spondylitis who used infrared saunas experienced reductions in pain and stiffness during treatment. Separate work in Alternative Therapies in Health and Medicine reported positive effects of far-infrared sauna use on chronic pain and fatigue.
These are small studies with short follow-up, and the wider evidence base for heat therapy in chronic pain is limited. They are a reasonable basis for trying a sauna alongside your existing care — not a basis for replacing it.
Using a Sauna for Pain Relief
Consistency. Three or four sessions a week, 15–20 minutes each, is the usual recommendation — and consistency matters more than any single long session.
Hydration. Drink water before and after every session. You lose roughly half a litre to a litre of sweat per hour of bathing, and dehydration makes aches worse, not better.
Complementary therapies. Sauna heat pairs well with gentle stretching, massage or light movement — the room is a good place to move stiff joints through their range while they are warm.
For an acute injury — a fresh sprain, strain or anything swollen or inflamed — heat can make matters worse in the first 48 hours. Follow the advice of whoever is treating you, and speak to your doctor before starting heat therapy for any diagnosed condition.
Saunas at Finest Saunas
At Finest Saunas, we offer a range of both traditional and infrared saunas. Whether you want the higher heat and löyly of a traditional room or the gentler, longer sessions of an infrared cabin, there is an option that will fit your space and your tolerance.
Regular sauna sessions can make a real difference to how comfortable you feel — for sore muscles, stiff joints, or simply the relaxation that heat brings. Find the sauna that suits you and make it part of the week.
This article is general information, not medical advice, and sauna use is not a treatment for arthritis, fibromyalgia or any other condition. If you live with a chronic pain condition, a cardiovascular condition, are pregnant, or take prescription medication, speak to a healthcare professional before starting heat therapy.
Looking for gentler heat you can sit in for longer?
Related guides
- What the Research Says About Sauna Health Benefits
- Traditional Sauna vs Infrared Sauna
- Sauna vs Cold Plunge
- How Often Should You Use a Sauna?
Published by Finest Saunas