In yogic terms, however, there is no separation between mind, body and spirit. The three exist as a union (one definition of the word yoga); what happens to the mind also happens to the body and spirit, and so on. In other words, if something is bothering you spiritually, emotionally, or mentally, it is likely to show up in your body. And as you work deeply with your body in yoga, emotional issues will likely come to the fore.
In the yogic view, we all hold within our bodies emotions and misguided thoughts that keep us from reaching Samadhi, defined by some as “conscious enlightenment.” Any sense of unease or dis-ease in the body keeps us from reaching and experiencing this state. Asanas are one path to blissful contentment, working to bring us closer by focusing our minds and releasing any emotional or inner tension in our bodies.
Though the ancient yogis understood that emotional turmoil is carried in the mind, the body, and the spirit. Western medicine has been slow to accept this. But new research has verified that mental and emotional condition can affect the state of the physical body, and that the mind-body connections is real.
Many doctors, psychotherapists, and chiropractors are embracing these findings, and are now recommending yoga to help patients deal with problems that only a few years ago would have been viewed and treated solely in biomechanical terms.
ref: yogajournal