How The AVACEN Works When the hand, enclosed in a special patented mitt, is placed inside the vacuum chamber, the microprocessor manages the application of negative pressure and heat to safely increase the temperature and volume of blood flowing through the high volume AVA’s. It is important to note that the application of heat without negative pressure is ineffective. Heat Infusing heat into the circulatory system reduces blood thickness (viscosity) and increases microcirculation. Thinner blood facilitates more efficient flow through the skeletal muscles on its route to the smaller vasodilated capillaries (microvascular circulation) which the body uses to radiate the excess ATM produced heat into the cooler ambient air. Microcirculation Boost An increase in microcirculation enhances oxygen delivery and nutrition to the skeletal muscles while carrying away toxins. The result… healthier, more relaxed muscles throughout the entire body.