Acupuncture originated in China some 3,500 years ago and is one of the oldest and most widely used systems of healing in the world. Acupuncture is a component of traditional Chinese medicine (TCM).
Traditional Chinese medicine is based on the theory that "Qi" (pronounced "chi"), is a vital force or energy responsible for controlling the mind and body. Qi is believed to flow through the body via channels, or pathways, which are called meridians.
Acupuncture is sometimes performed on horses.