Although unaware to most of us, we were given a shortcut to our unconscious mind. To our autonomic nervous system, which runs everything important to our life without our conscious mind even recognizing it.
Our breath and our lungs are the only organ that we can consciously control. Since our breath directly influences our physiology, our state and our performance, you can do as well. Activate you sympathetic or your parasympathetic nervous system in a breath.