One of the amazing things sunlight provides for us is Vitamin D. It is absorbed through the skin and converted to a state that the body can use. Read a short article on the six of the sun’s most important functions. We have a long history of using sunlight therapy – called “heliotherapy” today – that dates back to the ancient Greeks. This gland regulates our sleep/ wake cycles and triggers our bodies to activity or restful sleep. I have a few ideas that might be perfect for you . The simplest answer is that it provides energy. The Sun is very necessary for the other living organisms that it provides us with light for the vision … It is involved in the use of calcium in the body and performs many other important jobs. Our moon gets some of the rays of the sun, but is still so much colder than what we have here. Source: http://www.helium.com/items/1225885-vitamin-d-sunlights-effect-on-the-body, Tags: aging, brain, cancer, depression, glands, seasons, sleep, sunbathing, sunlight, vitamin d, vitamins, water,