Here is an article by Jim Morningstar:
Breathwork as defined by the International Breathwork Training alliance <www.breathworkalliance.com> is the art and science of teaching breath awareness and breathing techniques for enhancing the human physical, mental, emotional and spiritual condition. True wellbeing involves balance and harmony in all the components of oneʼs self. Excessive focus on one part of the self to the exclusion of others results in imbalance and dysfunction. The other side of this equation is that the fine-tuning and harmony of all aspects of the self lead to higher states of health, wellness and opens the door for subsequent growth. Healthy breathing is the thread which strings all the pearls of oneʼs self together. Letʼs look at how healthy breathing is in the mainstay of an integrative approach to personal growth.
Physical Health
Peak performance and achieving oneʼs personal best have always involved a mastery of oneʼs breathing. Though most of us are not in training for the Olympics, our physical health and wellbeing is directly related to regulated healthy breathing habits. Since there are few activities in which we engage in more than taking an inhale and and an exhale, any dysfunction in the process gets multiplied exponentially over the years. Conversely, healthy breathing has a nurturing and energizing effect on every physical organ and body system. All forms of yoga and, in particular, hatha yoga have documented results over the centuries on how coordinating steady diaphragmatic breathing with movement (asanas) or in stillness (meditation) improves physical health (e.g., McCall, 2007), Breath coaching has become increasingly effective in sports training and general.