How can tight muscles result in back pain? a. they contain sensitive nerves that become painful when tight. b. they can constrict the nerves in the spinal column. c. tight muscles stretch surrounding tissues and organs. d. they improve posture, which results in back pain.

The answer is B) because having tight muscles is constricting. For example overly tight hamstring muscles can constrict pelvic flexibility and introduce stress and pain in the lower back. This may be relieved to a degree by stretching the hamstring muscles carefully ahead of and after exercise.

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