The kidneys are located at both sides of the lumbus, which is therefore described as "the home of the kidney, its main functions are: to store congenital and acquired essence and control human reproduction , dominate water metabolism in other words kidney regulates the distribution of water and helps maintain fluid balance in the body and the reception of Qi which means that the kidney assists the lung in its function of receiving and descending the Qi. In other words, respiration depends not only on the descending function of the lung, but also on the kidney's function of reception and control, kidney produce marrow to fill.
