Just think about yourself; what happens to your breathing when you are frightened or anxious? Right. Your breathing is high and you hold your breath for a moment. This is a natural reaction. The (stress) hormones ensure that you can flee in case of an emergency. This is also called the fight or flight response. In such case, your deep abdominal breathing stops for a while and you can no longer feel your (deep) emotions. In such moment survival is, simply said, more important. However, your body may store the emotions and tensions and you may develop certain complaints.
Just observe during the day where your breathing is and how it feels. What emotions do you experience and what changes do you notice in your breathing? Examples of emotions are: joy, sadness, anger, fear or frustration. If you become aware of your breathing, you can also train it. This allows you to use your breath consciously. For example, to relax during stressful moments or to feel your emotions. This can increase your vitality and improve your health in the long run.