Mental health can be increased and strengthened with the help of physical tools. A knowledge which human beeings always possessed and for which lately interest arose again. A lot of wonderful techniques and methods have been rediscovered or have been further developed.
Personally I experience the human beeing as a unit of physical body, spirit and soul. Kundalini Yoga influences directly this system. Influencing the brain and the nervous system is a very important factor in the psychotherapeutic context. There are a lot of Kriyas (exercise series), which have a direct influence.
The knowledge about inner physical and intrapsychic operations is several thousands years old and well provened.