be raring to go

What is the origin of the idiom "raring to go" and when to use it?

The exact origin of the idiom "raring to go" is uncertain, but it is believed to have emerged in the United States in the early 20th century. The term "raring" is a colloquial alteration of the word "raring," which means being extremely eager or enthusiastic. This phrase is often used in informal settings, such as casual conversations, social gatherings, or friendly exchanges. It can be heard before a sports competition, where athletes express their eagerness to start and give their best effort. Additionally, it is used in professional or personal scenarios when individuals are highly motivated and enthusiastic about embarking on a new venture, undertaking a challenging assignment, or pursuing a goal.