Contrary to popular opinion, your eyes need some exposure to the full spectrum of sunlight to be optimally healthy. Light waves from the sun are converted to electro-chemical energy in cells in your retina, and this energy is transmitted throughout your brain and body where it has positive health effects.
Energy from sunlight travels to your hypothalamus, which is an area in your brain that is about the size of a grape and acts as the micro-processing chip that governs almost everything that happens in your body. Your hypothalamus receives information from all regions of your body and uses this data to regulate your autonomic nervous system to keep you healthy. Depending on your moment-to-moment needs, your hypothalamus adjusts your heart and lung rates, the amount of blood that perfuses your skeletal muscles and digestive organs, and whether you sweat or shiver, just to name a few of the bodily activities that it controls. Read more about Let There Be Some Light