Spending time outside is, in general, very healthy. Sunshine helps our bodies produce vitamin D, which is essential for the body to be able to absorb calcium and maintain healthy muscles and bones. Fresh air benefits the lungs, immune system, digestive system, mind, and mood. Exercise delivers an almost endless list of benefits. Getting outdoors—whether for a walk around the block, a long run, or a game of catch in the yard—is one of the healthiest choices you can make daily. Unfortunately, as the weather gets colder, spending time outside also brings with it extra opportunities to tweak or injure the spine.