Our back is an avascular structure, which means that it is without blood vessels. So the only way that one could facilitate flow of oxygen and nutrients to the back is by movement. It is for this reason that keeping fit is sometimes considered the best way to keep the spine healthy. You get some walk every day, and the back easily gets its nutrition. And if one is down with an ailing back, a chiropractor could facilitate movement in ways which is not otherwise possible.
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