PRI is a system of body posture/movement analysis and treatment that respects the internal asymmetries of the body. For esample, the liver is much bigger than the heart and this effects the funtion of the diaphragm.
One area of focus of PRI is the way we breathe and how that affects our posture and stability/mobility during movement. In part due to asymmetries in the body, some people can become stuck in patterns of movement that cause them pain and/or dysfunction. Treating the thoraco-abdominal region can provide restored functional mobility and reduced pain.