Definition & Meaning of "[make] {one's} blood run cold"

What is the origin of the idiom "make one's blood run cold" and when to use it?

The origin of the idiom "make one's blood run cold" can be traced back to ancient beliefs and cultural associations surrounding blood and emotions. In many cultures, blood has long been associated with life, vitality, and the essence of a person. The notion of blood running cold suggests a sudden and dramatic change in someone's emotional state, as if their life force or vitality is being drained away. This expression is often used in discussions about suspenseful or frightening situations, such as thrilling movies, suspenseful novels, or real-life encounters with danger. literature, and everyday conversations to emphasize the chilling impact of an event, statement, or revelation.