An adjustment, or manipulation as it is sometimes referred to, is a procedure involving the controlled movement of vertebrae in the spine. The objective of this movement is to re-align or restore normal motion to vertebrae.
An adjustment is often a pressure from the chiropractor utilizing the hands or an instrument to restore normal motion or alignment of vertebrae. This happens with a quick movement and is often without discomfort. You may hear a noise that sounds like you're cracking your knuckles, referred to as joint cavitation. It is the release of gases such as oxygen and nitrogen from the joint.
Overall, adjustments are an excellent way to keep the body functioning at its highest level. When the body is in alignment, the body is able to respond and perform as it was designed to.