Postural Restoration Institute Practice Test

Breathing is a primary tool for self-regulation and influencing autonomic tone. When someone cannot modify their breathing, they lose an accessible lever to shift toward a calmer state and to coordinate posture and movement through diaphragmatic rhythm and rib cage mechanics. In PRI, changing how you breathe helps balance sympathetic and parasympathetic activity and supports motor control strategies that depend on stable breathing. Without that option, the person lacks a key strategy for managing arousal and posture, making regulation less flexible and more challenging. The other statements imply absolute control, immunity to stress, or no effect, which don’t reflect how breathing interacts with regulation.