how Infrared sauna supports Immunity
- Roxie Rewind

- Sep 11
- 2 min read

An infrared sauna can support your immune system by gently raising core temperature, improving circulation, and helping you relax.
Quick take on how infrared sauna supports immunity
A warm-up for your defenses. Heating the body in a sauna can temporarily raise core temperature—a fever-like nudge that’s part of how the immune system gears up. Heat exposure engages helpful stress responses that aid immunity.
Short-term immune changes happen. Studies show a temporary rise in white blood cells after a session and after repeated sessions. That’s a sign your body is mobilizing defenses, though it doesn’t prove illness prevention by itself.
Fewer colds are possible with habit. One randomized trial found that people who used an infrared sauna regularly had fewer common colds than those who didn’t. Observational studies also link frequent sauna use with lower pneumonia risk over time.
It’s not a cure. In a controlled study, simply inhaling hot air in a sauna didn’t reduce cold symptoms once you’re already sick. Think prevention and support—not a magic fix.
How heat can help support immunity
Heat-shock “practice runs.” Gentle heat prompts cells to make heat-shock proteins—little helpers that protect and repair stressed cells.
Better circulation. Heat opens blood vessels (vasodilation), helping immune cells and nutrients move where they’re needed, then clear out waste.
Stress down, sleep up. A calm, warm session lowers perceived stress for many people, and stress management is a quiet superpower for immune health.
Why infrared specifically?
Infrared sauna supports immunity by warming you deeply but comfortably at lower air temperatures than a traditional sauna. Many people find they can stay in longer without feeling overwhelmed, which provides time to raise core temperature to support immune function.
A simple, no-hype routine
Ease in: Start around 100–120°F for 15–20 minutes. If it feels good, build toward 25–40 minutes.
Aim for consistency: 2–4 sessions per week beats the occasional marathon. (Immune studies showing benefits look at regular use.)
Stack good habits: Hydrate, sleep well, move your body, and eat plenty of plants and protein. Sauna supports these—not replaces them.
At the first sign of a bug: Rest, fluids, and clinician guidance come first. Sauna won’t “sweat out” an infection once you’re sick.
Safety notes
Skip or get medical clearance if you’re pregnant, have unstable heart disease, very low blood pressure, or heat intolerance. Stop any session if you feel dizzy or unwell. Medications and conditions differ—ask your clinician what’s right for you.
💋 Roxie Rewind
(Warm up your defenses, the comfy way.)



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