bundle / bag of nerves

What is the origin of the idiom "bundle of nerves" and when to use it?

The phrase "bundle of nerves" is an idiomatic expression used to describe someone who is excessively anxious, tense, or nervous. The phrase likens the person's heightened state of nervousness to a tightly bundled collection of nerves. It suggests that the person's nervousness is intense and may manifest physically or emotionally.