The Breath–Mind Connection
The manner in which you breathe has an immediate and direct influence on your thoughts. By controlling your breath you can learn to control the mind. Erratic , Irregular, Obstructed breathing prompted restlessness; Slow, quiet, Rhythmic breathing retards the flow of thoughts and generally has a quietening effect on the organism.
So the next time you feel uneasy, depressed, dejected or angry, take a few deep breaths. You will at once be filled with new vigour, energy and mental equipoise.