Vitamin D is often called the “sunshine vitamin,” but it does much more than support bone health. Low levels can affect pain, recovery and even athletic performance. Whether you’re dealing with ongoing discomfort or training, Vitamin D plays an important role in how your body functions. What Is Vitamin D? Vitamin D is a fat-soluble vitamin your body produces when your skin is exposed to sunlight, and you can also get it from certain foods and supplements. It supports bone hea