Emotions in particular drain the battery. It's about energy management. Through exercises you increase the stress resistance and thus your energy supply. You learn to keep control. There is a connection between heart rhythm variability (HRV) and self-regulation. Here you see the difference between an incoherent and a coherent heart. Frustrations or anxiety appear on the screen as a capricious HRV pattern. A sign that the brain and nervous system are not in harmony. Positive emotions such as appreciation and happiness show a fluid HRV pattern. Body awareness and exercises are the key to a well-functioning autonomic nervous system. Those in a coherent state send positive signals from the heart to brain parts that are involved in decision making and creativity. That is why current leaders want to be coherent.