What is the origin of the idiom "have the stomach for something" and when to use it?

The idiom "have the stomach for something" comes from how our stomach helps us physically digest and handle the food we eat. It refers to whether a person can mentally or emotionally deal with or accept something tough. Just like our stomach processes food. The phrase is commonly used when discussing challenging or unpleasant tasks or experiences, indicating whether someone possesses the necessary emotional or physical strength to face them.