Please note: This is a companion version & not the original book.Sample Book Insights: #1 The human body needs light to be healthy. The human body needs different types of light to function well, and these light types are crucial for our health. We have developed a light deficiency and toxicities that are having a massive impact on our health.#2 The most common light-related health problems are vitamin D deficiency and circadian rhythm disruption, which are caused by inadequate and improper light exposure. Red and near-infrared light deficiency is also a problem, and has widespread effects on our brain and organ function, immune system, energy levels, mood, neurotransmitter balance, and hormone levels.#3 We are designed to need light to be healthy, but since we spend almost all our time indoors, we are massively deficient in sun exposure, which causes major problems for our health. Red and near-infrared light are able to penetrate deep into the body and cells, and have healing effects on the cells.#4 Red and near-infrared light are not some weird technology that benefits us for some random reason. These wavelengths of light come from the sun, and it turns out that our body has evolved over millions of years to be capable of utilizing them to help power up our cells.