sit on the stomach


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sit heavy on the stomach

To cause discomfort or indigestion after swallowing; to not be easily digestible. In older times, one might take a bit of sugar alongside medicine that sat heavy on the stomach. I don't think I'm ready for a hike just yet; that big breakfast is sitting heavy on the stomach.
See also: heavy, on, sit, stomach

sit (heavy) on the stomach

(of food) take a long time to be digested.
See also: on, sit, stomach