Dit Da Jow is an analgesic liniment traditionally preferred by martial artists. Often a martial arts master blends his own mixture of aromatic herbs such as myrrh and ginseng, which when combined are believed to stimulate circulation, reduce pain and swelling, and improve healing of injuries and wounds. The tradition became known as "hit medicine". The main supposed healing function of dit da jow, according to traditional Chinese medicine, is to unblock blood stagnation and blood stasis. When one suffers a trauma type injury, qi is blocked in the meridians causing pain and swelling. Dit da jow supposedly opens up this blockage allowing the qi to flow freely allowing the injury to heal.