Does your arm feel tight even though stretching your shoulder and forearm never seems to solve the problem? Maybe you experience tingling into your hand while working at a computer. Your arm becomes uncomfortable while driving. Reaching overhead produces a pulling sensation from your neck into your fingers. Or your grip feels different after a previous neck, shoulder, or upper-body injury. Those symptoms may not be caused by a tight muscle alone. The nerves traveling from you

Does the back of your leg feel unusually tight—even though stretching your hamstrings never seems to provide lasting relief? Maybe sitting in the car causes tingling down your leg. Bending forward creates a pulling sensation behind the knee. Or your leg feels restricted after a previous low-back injury or disc herniation. The problem may not be muscular tightness alone. Sometimes the nervous system becomes sensitive to movement, compression, or prolonged positions. In these c