What is the origin of the idiom "worked up" and when to use it?

The idiom "worked up" likely originated from the idea of becoming physically or mentally agitated or exhausted after engaging in strenuous or intense work. The phrase may have evolved from the notion of working oneself into a state of heightened emotion or excitement. This expression is used in various contexts or occasions to describe a state of heightened emotional agitation, exhaustion, or anticipation. It is commonly employed to depict individuals who are very angry or upset about something unpleasant that has happened, such as a frustrating situation, unfair treatment, or disappointing outcome.