How can Chiropractic help with asthma? Chiropractic itself is not a cure but we again look to the nervous system! Your diaphragm is the primary muscle used for breathing. Nerves that control breathing exit the spinal cord in the mid-neck area of the C3, C4 and C5 vertebrae. Spinal misalignments (subluxations) in this area that cause nerve interference can have a significant impact on our ability to breathe normally. Correcting these subluxations helps restore proper nervous system control, so the body can heal and breathe normally.