Like removing the kink from the hose, a spinal adjustment can ease pressure on a nerve, allowing nerve impulses to flow and protect the nerve from further damage.
A pop or click sound it often heard during an adjustment. Doctors call this cavitation. Much like opening a can of carbonated soda, the sound is caused by a rapid change in pressure acting on the fluids within the joint. Cavitation often occurs during an adjustment, but it does not have to occur for the adjustment to be effective.