These Harvard Researchers reviewed over 533 studies and found strong evidence that shining the right light “can increase muscle mass gained after training, and decrease inflammation and oxidative stress in muscle biopsies.” They found it worked so well they even pondered whether it should be allowed in Olympic International Competitions. Personally I love the way light therapy helps me recover faster and make stronger gains from my efforts. Read the abstract here: https://pubmed.ncbi.nlm.nih.gov/27874264/