the Science behind Infrared Sauna and Heart Health
- Roxie Rewind

- Sep 11
- 2 min read

If you want a simple habit that’s good for your heart, an infrared sauna belongs on the shortlist. Heat gently raises your heart rate, opens up blood vessels, and helps you relax—three wins for cardiovascular health when used regularly and sensibly. Here’s the plain-English version of what research shows.
Quick take on heart health and infrared sauna
Regular sauna use is linked to better blood pressure and blood-vessel function in clinical studies of heat therapy.
Large Finnish follow-ups found that people who used saunas more often had lower risks of fatal heart events and overall cardiovascular mortality (associations, not proof of cause).
For people with heart failure, hospital-style far-infrared “Waon therapy” , Waon therapy is a form of thermal treatment in a dry sauna that improves symptoms and outcomes when added to medical care—this is supervised care, not a DIY protocol.
Newer studies remind us results can vary—so think of sauna as a supportive habit, not a replacement for exercise, meds, or clinician guidance.
How heat helps your heart
Opens the pipes (vasodilation). Heat relaxes artery walls, which can lower blood pressure and improve how well vessels respond to blood flow. Over time, this is tied to healthier vascular function.
Gentle “cardio-like” training effect. In the cabin, heart rate rises into a light-to-moderate zone while your body moves blood to the skin to cool you—some of the same signals your heart sees on an easy workout day.
Heart health and infrared sauna, stress relief you can feel. Consistent relaxation matters for blood pressure, sleep, and recovery—one reason frequent sauna users seem to fare better over the long haul.
What this means for you
If you’re generally healthy, an Infrared sauna can be a heart-smart add-on alongside movement, strength training, sleep, and a solid nutrition plan. Observational studies suggest “more often” (e.g., several times per week) is associated with better outcomes than once in a while.
If you have heart disease: Many people with stable heart conditions can use a sauna safely, but check with your clinician first. Hospital-grade protocols for heart failure exist and show benefits—but those are supervised and tailored. Don’t self-treat advanced conditions with heat.
A simple, heart-friendly routine
Start easy: 100–120°F for 15–20 minutes. Build up toward 25–40 minutes as it feels good.
Aim for consistency: 2–4 sessions per week beats one marathon sweat. Observational data link higher weekly frequency with better long-term heart outcomes.
Hydrate and cool down: Sip water before/after; sit or shower cool for a few minutes post-session.
Stack it smart: Short walk or gentle mobility → sauna → light stretch → balanced meal and sleep.
Keep exercising: Sauna supports your heart; it doesn’t replace aerobic or strength training. Recent research shows heat isn’t a magic substitute for exercise.
Safety first
Skip or modify sessions and talk to your clinician if you’re pregnant, have unstable angina, severe valve disease, recent cardiac events, very low blood pressure, uncontrolled arrhythmias, or if any heat exposure makes you dizzy or unwell. Always stop a session if you feel off.
💋 Roxie Rewind
(Warm heart, strong life.)



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