Medically reviewed by Dr. Jeffrey Peng, MD — Board-Certified Sports Medicine Physician Last updated: February 28, 2026 Red light therapy has become one of the most talked-about recovery tools among athletes and fitness enthusiasts. From professional sports teams to home LED panels, the technology is everywhere — but does the science actually support the hype? As a sports medicine physician who has treated thousands of athletes in the San Francisco Bay Area, I get asked about