What does the expression "butterfly in the stomach" mean?
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A stomach butterfly in humans is the physical sensation of a "flopping" in the stomach caused by reduced blood flow to the organ. This is a result of the fight-or-flight response releasing adrenaline, increasing heart rate and blood pressure, which in turn pumps more blood to the muscles
A stomach butterfly in humans is the physical sensation of a “flopping” in the stomach caused by reduced blood flow to the organ. This is a result of the fight-or-flight response releasing adrenaline, increasing heart rate and blood pressure, which in turn pumps more blood to the muscles
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