450: The Light Secret: Why Temperature Doesn't Matter in Optimal Infrared Therapy with Connie Zack

5 Dec 2025 · 59 min
Episode

5 Dec 2025 · 59 min

0:00

Connie Zack, founder of Sunlighten, explains that infrared therapy works through light energy, not heat. Near-infrared at 880 nm penetrates deepest, red light at 660 nm stays more superficial, and using both together is more effective than red alone. Temperature doesn't measure effectiveness; benefits start immediately, and heat-shock proteins activate at just 104°F.

Questions this episode answers

May 23, 2025

About 55% of the Sun's rays are in the infrared spectrum

Approximately 660 nanometers (red) and 880 nanometers (near-infrared)

Reported activation at temperatures as low as about 104°F (40°C)

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