The vagus nerve has a plethora of capabilities including decreasing stress levels, anxiety, anger and even inflammation. The vagus nerve can automatically relax your nervous system thus changing the course of your emotions. Writing with expressive tones three times a day has been proven to increase heart rate variability. Expressive writing can also improve the mindsets of people fresh out of a marital separation. Studies show that when people who had just had a breakup performed these expressive writing tasks, they felt better and their stress levels had declined tenfold.