Definition & Meaning of "ready to drop"in English

What is the origin of the idiom "ready to drop" and when to use it?

The idiom "ready to drop" originated from the idea of someone being so physically exhausted or fatigued that they are on the brink of collapsing or falling down due to extreme tiredness. This expression is used to describe a state of extreme physical exhaustion or fatigue, typically when someone is so tired that they can barely continue and are in desperate need of rest.