Glossary of Judo terminology
"Zanshin" (Awareness) is a term from Japan's martial arts. To be in a Zanshin (Awareness) state, is to remain on guard to the end, keeping one's concentration focused.
The moment after executing what appears to be a successful Waza, a contestant may relax his guard, thus presenting the opponent with a chance to counter. A contestant must therefore remain focused until the win has been completely secured. For example, after using a Nage waza (Throwing techniques), etc., to successfully throw an opponent, the contestant's focus may be on the fallen opponent, when he should in fact be focusing on a follow-up Waza. The state in which one remains focused at all times is called "Zanshin" (Awareness).
The Zanshin (Awareness) concept is also used in the Japanese arts such as the tea ceremony and Japanese dance, etc. Someone who loses focus before something is completed (e.g., forgetting to close a sliding door), may be accused of "Lacking Zanshin (Awareness)". The roots of Zanshin (Awareness) lie in the concept of being always conscious of the beauty in a given procedure.