The vagus nerve plays a huge roll in each of our lives every moment of every day. The vagus nerve, the tenth and the longest of the cranial nerves, is responsible for many crucial functions in the body, as it conducts nerve impulses to every major organ, and regulates the parasympathetic nervous system. The parasympathetic nervous system is part of the autonomic nervous system (along with the sympathetic nervous system) and regulates the body’s unconscious actions when the body is at rest, such as digestion, urination, salivation, sexual arousal, and defecation. When our sympathetic nervous system engages, often due to stress, and we have a “fight or flight” response, the vagus nerve helps the body relax again. The vagus nerve helps us breathe, as it elicits acetylcholine, which tells our lungs to breathe. Our heart rate is controlled by the vagus nerve as well, and it helps to slow our pulse. The vagus nerve, when functioning well, allows us to create memories. The gut uses the vagus nerve to communicate with the brain and tell it how you are feeling. When the vagus nerve learns there is inflammation in the body, it notifies the brain and anti-inflammatory neurotransmitters are sent to the rescue.