What is the meaning of " Milk doesn't sit with me well"? [closed]

To not "sit well with" as an idiom meaning that a situation is difficult to agree with or to accept. See not sit well at the Free Dictionary. Their example:

The idea of declaring war does not sit well with many voters.

If X is a food or beverage that "doesn't sit with me well," it means that X does not agree with (or is not accepted by) my digestive system. This might mean gas, nausea, vomiting, or diarrhea.

Idioms are

Milk does not agree with me.

Other words are:

Milk upsets my stomach.

Milk gives me a stomach ache.


It's an idiom indicating that it disagrees with him. In this sense, this definition of "disagree" from Noah Webster's 1828 American Dictionary of the English Language probably applies:

  1. To be unsuitable. Medicine sometimes disagrees with the patient; food often disagrees with the stomach or the taste.

It does not suit him to drink milk after a workout. This is most probably because it makes him feel somehow ill. Most often it refers to a stomach ache but other reasons may apply, for instance perhaps it makes him feel fatigued and dizzy or maybe he just finds it tastes bad for some unspecified reason.

Cambridge Dictionary of American Idioms. S.v. "not sit well." Retrieved from The Free Dictionary by Farlex.