What causes a knockout?

Answer 1

A knockout occurs in fighting or boxing in two ways. The primary way is that the power of a punch causes the brain to crash into the inner wall of the skull. This in turn sends the brain into a immediate shutdown mode and renders the person unconscious for a period of time, seconds to minutes depending on how long the brains self check or diagnostic lasts. The other method of a knockout is caused by a build up in the body from punches that cause high levels of acid to accumulate around the muscle tissue and the ensuing pain becomes great enough for the brain to tense up and incapacitate the body. A body KO is harder to achieve.