Researcher have found that one specific mechanism of red and near infrared light therapy is that these longer wavelengths of light are able to penetrate into cells and activate the mitochondria, directly leading to increased cellular energy production.
Our heart and liver are packed with mitochondria, because they work constantly to pump blood, provide life, filter out toxins and protect us from toxic damage.
The brain is also packed with mitochondria. So are all the organs, tissues, skin, and especially muscles, which power us throughout the day.
The mitochondria are the batteries that fuel the processes of our organs. So things which enhance the mitochondria translate into more cellular energy inside the cell, which allows the cell or organ ( e.g. brain, heart, liver, skin, muscles, etc) to work optimally.