The post discusses the effects of 670nm red light exposure on aged mitochondrial function and colour vision. It highlights a range of research supporting the notion that red and near-infrared light can positively impact mitochondria, particularly in muscle cells. Users have shared their personal experiences with red light therapies, noting enhancements in vision and overall health benefits. Discussions point to practical applications such as using LED strips for therapeutic light exposure and the benefits of natural sunlight, especially in the morning. Overall, the community appears optimistic about the potential of red light therapy in both clinical and personal settings, although anecdotal evidence should be approached cautiously.