Why Do You Feel Butterflies in Your Stomach

The video explores the sensation of 'butterflies in the stomach' and its connection to the autonomic nervous system (ANS). It explains how the ANS, divided into parasympathetic and sympathetic branches, controls involuntary bodily functions. The sympathetic nervous system triggers the fight or flight response, preparing the body for stress or danger. This response includes increased heart rate, dilated pupils, and redirected blood flow, influenced by hormones like adrenaline. The video also highlights the evolutionary basis for these physiological changes, emphasizing their role in survival.

What new insight or understanding did you gain from this video?