According to this theory, running through the body are 12 channels or meridians, along which are distributed various acupoints (acupuncture points) corresponding to various organs. Within these meridians flows the "qi" or vital energy, composed of yin and yang.
根據理論，人體內部有十二條經絡，每一條經絡分布著不同的穴位，不同穴位對應不同器官，經絡內部則流動著由陰陽組成的「氣」。