An instinctive sense or intuition about something, often without logical reasoning or evidence to support it.
This phrase emerged in the mid-20th century, building on the ancient understanding that strong emotions are felt in the abdomen. The connection between the gut and intuition has roots in the observation that anxiety and strong feelings often manifest as stomach sensations.
Modern neuroscience has actually validated this folk wisdom - the enteric nervous system in our gut contains over 500 million neurons and communicates directly with the brain via the vagus nerve. This 'second brain' can indeed influence decision-making and emotional responses, giving scientific credence to trusting your gut.
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