TRE® (Trauma/Tension Release Exxercises) created by David Berceli, PhD., is a series of seven exercises specifically designed to evoke the body's natural shaking mechanism, releasing deeply held tension. This simple yet profound technique facilitates the lengthening and relaxing of the psoas muscle. This relaxation provides an effective release of physical and emotional tension. TRE® exercises work the legs, which helps to evoke the tremor response. This gentle shaking is the nervous system's way to discharge stress and muscular contractions in order to restore the body to wholeness.