Dr. Greg Kawchuck of the Canadian Memorial Chiropractic College published a study in 2013 explaining why people get off the chiropractic treatment table after care, and feel a difference right away. You can read the paper for more details: read this.
The summary shows the facet joints have a reduction in stiffness, the small stabilizing muscles of the spine become more active and the discs become healthier and more elastic. Spinal manipulation may be one of the most effective forms of care for common back and neck complaints, but the only way you will know is to try it for yourself.
If you are considering chiropractic care, welcome! It is extremely safe, time tested and effective, and results are often immediate. You don’t have to “believe” in order to benefit from safe, modern chiropractic care. Your body will let you know, and the science we have accumulated in support of modern care eliminates the need for “belief.”