What is the origin of the idiom "use one's head" and when to use it?

The idiom "use one's head" all originate from the idea that the head, specifically the brain inside it, is the center of thinking and intelligence. While there is not a specific historical event associated with the origin of this idiom, it is a straightforward reference to the importance of using one's brain or intellect to solve problems, make decisions, or think clearly. This idiomatic expression is used to advise someone to think carefully, use their intelligence, or be more rational in their actions or decisions.