The practice of chiropractic is based on sound scientific principles. The existence of the nervous system as the primary control mechanism of the body is an undisputed scientific fact. The nervous system is the link between the brain and the body. Spinal misalignment puts pressure on the nervous system. This pressure can disrupt communication to the body's organs and limbs leading to pain, discomfort, tingling sensation, numbness, and even headaches. This relationship of the nerves with the spine is the focus of the practice of chiropractic.