EWOT is a technique that offers much higher therapeutic results than expensive, inconvenient hyperbaric chamber do. EWOT involves breathing high levels of oxygen while exercising. The higher oxygen level in the lungs creates a greater head of pressure to drive oxygen into the pulmonary capillaries. The exercise moves the circulation faster, ensuring a greater oxygen carriage. Initially, the oxygen pressure in the veins rises, as more oxygen is getting through to the venous side, but it is this oxygen that allows the capillaries to repair their oxygen transfer mechanism.