Studies have shown that time spent outside is beneficial to mental and physical well being – in a number of different ways. In adults, depression rates decrease with outdoor physical activity and prolonged exposure to vitamin D. Children who live a more active lifestyle, as compared to a sedentary one, consistently test higher in reading comprehension and math skills. Additionally, outdoor play exposes children to sunlight, fresh air, and natural elements, which in turn benefits the immune system, contributes to healthy bone development, and encourages a lifetime of physical activity.