Breathing and heart rate are intimately tied to the bodily expression of emotions. Patterns within heart rate variability are more significant than the simple rate. In states of stress, anxiety, anger and sadness the variation tends to be disordered and chaotic. In positive emotional states such as love, social connection and gratitude, the variation tends to be ordered and rhythmic. There are multiple approaches to breathing that are associated with improved physical and emotional health. Two are described here. Coherent breathing involves conscious breathing at the frequency of 5-6 breaths