“An intricate communication network inside the body constantly monitors breathing, heart rate, digestion, and immune function.”
Interoception research is revealing how the body monitors its internal state and communicates that to the brain. That’s why you feel hungry, tired, or anxious before you consciously know why. Poor interoceptive awareness correlates with anxiety disorders, eating disorders, and chronic pain. This could explain why some people are more attuned to their bodies than others. “Listen to your body” is easier said than done.