After reflecting on my client’s experience, I suggested she breathe through her nose while she was recovering (see previous post). Stress can influence the heart, so I recommend that when one is stressed or anxious, one should try breathing through the nose. Breathing through the nose stimulates the parasympathetic nervous system which leads to vasodilation. It suppresses the sympathetic nervous system (which raises the heart rate and constricts the blood vessels). There is also evidence that a nitrous based compound found in the nose helps the body utilize oxygen. More can be found about this breathing in all of my books.