Some doctors even use suggestion during hypnosis to help people to stop smoking or stick to a diet. The English word "hypnosis" comes from the Greek name for the god of sleep, Hypnos. Though it superficially resembles sleep, "in reality it's when a person's mind goes from consciousness to a deeper state within the subconscious," notes Edwin Chen.
英文裡的「催眠」（HYPNOSIS）一詞源於希臘語的「睡神」（HYPNOS），是一種表面上看起來像睡眠，「實際上是人的心靈從一般意識進入深層潛意識的狀態」，陳勝英指出。