It Helps You Get Vitamin D
It's important for your bones, blood cells, and immune system. It also helps your body absorb more of certain minerals, like calcium and phosphorus. Your body needs sunlight to make it, but you don't need much. In the summer, just getting sun for 5 to 15 minutes, 2 or 3 times a week, should do it. In the winter, you might need a bit more.