Every breath is deliberate, calibrated, witnessed.
With each described inhalation and exhalation, we become keenly aware of location and movement of sensation arising across each breath. Participants become keenly aware of the tightening on the inhaling breath, and the softening on the exhaling breath. This natural pattern is developed and promoted throughout the practice.
Further, the tighten and softening phases are enhanced with deliberate focus. This enhances the relaxation of the physical body, calms the brain as it embodies the inexorable relaxation of the physical body and tones the vagus nerve (see below).
The practice of enhancing the tightening and then the softening within the body emulates the beneficial outcomes of increased Heart Rate Variability (HRV).