Infusing heat into the circulatory system reduces blood thickness (viscosity) and increases microvascular circulation. Thinner blood facilitates more efficient flow through the skeletal muscles on its route to the smaller vasodilator capillaries (microvascular circulation) which the body uses to radiate the excess ATM produced heat into the cooler ambient air.
An increase in microvascular circulation enhances oxygen delivery and nutrition to the skeletal muscles while carrying away toxins. The result… healthier, more relaxed muscles throughout the entire body.