Journal
Infrared vs Ordinary Heat: What's the Difference for Recovery?
Why near-infrared light works deeper than surface heat.
Infrared or ordinary heat: what's the difference?
Ordinary heat warms the air and the skin's surface. Near-infrared light penetrates deeper into the muscle tissue and joints. That penetration is what supports circulation, helps relieve post-exercise stiffness and supports the body's natural recovery processes — beyond what surface heat can reach.
How infrared light works
Light therapy uses specific wavelengths — visible red and invisible near-infrared (around 850 nm) — that reach into the skin and muscles. They support processes such as circulation, muscle relaxation and reduced post-exercise discomfort. Infrared heat also supports the release of tension and a deep sense of relaxation.
Three key differences
Depth
Surface heat stops at the skin; infrared reaches further.
Feel
A radiant, gentle, enveloping warmth, different from hot air.
Compounding effect
Regular use supports recovery better than a one-off session.
Frequently asked questions
No — it's a recovery tool that complements movement, it doesn't replace it.
Radiant heat can make you sweat, which accompanies the body's natural detox processes.
Many feel relaxed from the first session; benefits build with consistency.
Want to experience it?
Explore infrared recovery in Nice, and the term near infrared.
Infrared recovery