YouTube,

Running With Achilles Tendonitis :Treat my achilles

How to fix Achilles Tendonitis: Squat university

Best Running Shoes For Achilles Tendonitis: Spark Healthy Runner

Redlight

660nm and 850nm in "red light AI" refers to red light therapy (RLT) wavelengths that provide complementary benefits: the 660nm deep red light promotes skin rejuvenation and superficial tissue repair by stimulating cell repair and collagen production, while the 850nm near-infrared (NIR) light penetrates deeper into the body to reduce muscle pain, relieve joint pain, and promote wound healing. The term "AI" is likely a misstatement for "and," as these wavelengths are often combined in RLT devices for comprehensive, synergistic effects, rather than being related to artificial intelligence.