In Traditional Chinese Medicine (TCM), meridians are imaginary channels or pathways through which the life force, or Qi (pronounced "chee"), is believed to circulate. According to TCM, the body functions optimally when Qi is able to freely circulate throughout it. In TCM theory, each of the twelve principal meridians corresponds to an organ or set of organs. A network of pathways known as meridians connects the organs, tissues, muscles, and even the mind and emotions. The meridians are designated by their corresponding organs, such as the Lung, Heart, Liver, etc. Each meridian is believed to be associated with a specific path and function. They manifest on the body's surface and are associated with specific physiological and psychological characteristics. Traditional Chinese medicine considers the free flow of Qi along the meridians essential for attaining and maintaining health. When Qi in a meridian becomes blocked, unbalanced, or deficient, it is believed that a variety of symptoms and health issues arise. Acupuncture, acupressure, and herbal medicine are TCM therapies that restore the flow and equilibrium of Qi within the meridians. Notably, the concept of meridians and Qi flow is unique to traditional Chinese medicine and may not be acknowledged in other fields of medicine and science.