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Researchers have documented the benefits of a regular practice of simple, deep breathing (1,2,6), which include: 1  Reduced anxiety and depression. 2  Lower/stabilized blood pressure. 3  Increased energy levels.  Muscle 1  relaxation. Decreased feelings of stress and overwhelm.
Research has shown that breathing exercises like these can have immediate effects by altering the pH of the blood, or changing blood pressure. But more importantly, they can be used as a method to train the body's reaction to stressful situations and dampen the production of harmful stress hormones.