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Your mind has finally stopped racing and you've just nodded off, only to be rudely awakened by a deep knot of sudden pain in your thigh, calf or in the arch of your foot. Athletes and high heel wearers alike are often awakened from sleep by the infamous nocturnal leg cramp or "charley horse." And though

An adult human spine typically consists of 26 moveable segments: seven cervical vertebras, twelve thoracic vertebras, five lumbar vertebras, one sacrum, and one coccyx (tailbone). Intervertebral discs separate the segments from the second cervical vertebra down to the sacrum and a thinner disc is present