That feeling in your gut is real. You have more neurons in your gut than a cat has in its brain.
Your vagus nerve helps control your heart and digestive tract, including parasympathetic control (opposite of fight or flight).
So in a potentially dangerous situation, while you might notice your sympathetic processes kick in (blood pressure increase, skeletal muscle blood flow), the decrease in the parasympathetic 'system' is sometimes more obvious in your gut because it's so centrally located.
Your vagus nerve helps control your heart and digestive tract, including parasympathetic control (opposite of fight or flight).
So in a potentially dangerous situation, while you might notice your sympathetic processes kick in (blood pressure increase, skeletal muscle blood flow), the decrease in the parasympathetic 'system' is sometimes more obvious in your gut because it's so centrally located.
“Until you make the unconscious conscious, it will direct your life and you will call it fate.”