The deep, methodical breathing works by stimulating the vagus nerve, which in turn triggers a calming response in the body. “Slowing your breath can lower your heart rate, release tension, and calm your nervous system, relieving symptoms of stress and anxiety” she explains. “It can also help take the focus (away) from thoughts that may be causing you tension, (and moving it) to your breath.”
This article describes three breath exercises to kick things off. Keu Words: Mental Health