The human skeleton is a marvel of natural evolution, as the human race alone is capable of upright, bipedal locomotion. Millions of years ago, our primate ancestors gave up their tree-bound lifestyle for a lifetime of running and hunting game, and this gave our early ancestors many advantages over time. Today, the human skeleton features an S-shaped spine, an upright pelvis, long and hard leg bones, and arched feet. All of this makes upright walking possible, though this does take a toll on the body. Fighting gravity so acutely will wear out the back and the spine, and many people around the world today suffer from chronic back pain for…