Blood Volume... The distribution of blood supply in the internal organs varies during rest and activity.

The systemic circut contains 84% of total blood volume and disperses it to all the organs of the body to support their metabolism. The pulmonary circut contains only 8% of the blood volume yet it receives the same cardiac output as the systemic circut.

The anatomical cavity that normally holds the greatest volume of blood in the systemic circut is the abdomen comprised of the viscera: liver, gall bladder, pancreas, stomach, intestinal tract. Second in volume in the systemic circut is the thoracic cavity ie. the heart and kidneys. Third in blood volume is the cranial cavity ie. the brain, followed by the pelvic cavity.

With most exercise, blood flow to the visera drops below normal resting levels. The harder the body works, the less oxygen and nutrients the deep organs get. In fact, even blood flow to the heart muscle itself increases very slightly compared to the dramatic increase in working skeletal muscle.

Consequently Body'Fit pH Fitness is designed to help balance blood flow between muscles and organs, by opening up the blood vessels in the viscera with a series of movements that compress the abdomen releasing the hormone adenosine which acts as a vaso dilator.