Explain sympathetic nervous system and parasympathetic nervous system

Let's explain the two main branches of your autonomic nervous system.

The sympathetic nervous system is often called the "fight or flight" system. It prepares your body for stressful or emergency situations. When activated, it increases your heart rate, dilates your pupils, inhibits digestion, and directs blood flow to your muscles, giving you a burst of energy and heightened awareness.

The parasympathetic nervous system is the "rest and digest" system. It works to calm your body down after a stressful event and conserves energy. It decreases your heart rate, constricts your pupils, stimulates digestion, and promotes relaxation, bringing your body back to a state of equilibrium.