As people age, they begin to complain more of pains in their muscles and joints. They seem to stiffen up with age, and such commonplace activities as bending over for the morning paper can make them wince.
Such discomfort can grip so fiercely that they are sure it begins deep in their bones. But the real cause of stiffness and soreness lies not in the joints or bones, according to research at the Johns Hopkins Medical School, but in the muscles and connect...
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