The human skeleton is unique in the animal kingdom, since it is engineered for a lifetime of bipedal movement. Our ancient ancestors gave up their tree-dwelling, vegetarian lifestyle for a lifetime of running and hunting game, and this results in an S-shaped spine, long and tough leg bones, arched feet, and an upright pelvis. This offers many advantages, but it also means wear and tear, since the spine and legs are acutely fighting gravity for a lifetime. Even today, chronic back pain ranks among the most common back pain in the world, and this is why pain clinics, chiropractor’s offices, …