According to the teachings of Structural Yoga ™  “ Health is not merely determined by the physical body nor is it created by physical exercise alone.  The Sanskrit word for health is svastha, which literally translated means “established in the Self”.  To the yogis, true health is a coming home to your Self.  In the condition of not being at home to your Self, there is dis-ease. For most people however, the bodies are separated, blocked from communicating with each other.  In Yoga training, the proper practice of asana, pranayama and contemplation returns the five bodies (koshas) to a right relationship with themselves.  Hence we are aligned again and re-established with ourselves. 
Structural Yoga Therapy,  Mukunda Stiles

The goal of yoga therapy is to return to a state of balance and
harmony.  Achieving this state of peace and tranquility returns
the body and mind to ease.  Disease naturally melts away.  Give
yourself the gift of harmony through yoga.  Small group classes, workshops, and private Yoga Therapy sessions are offered with this goal of achieving "sattva", and relieving suffering, pain, and discomfort.