This has the effect of massaging the organ or gland and stimulating it. Deep breathing and visualizing the target area sends an extra supply of prana to the area. Yoga's effect on the spine is to increase its flexibility. This ensures a good nerve supply to all parts of the body, since the nerves from the spine go to all the organs and glands. Pranayamas are specially developed breathing techniques.
Yoga breathing produces a huge storage of energy in the solar plexus area.
This will cause the body to radiate vitality and, if any sickness is developing, the body can call upon some of this energy reserve to combat the disease. The total effect of yoga asanas and breathing is to produce a state of high vitality and rejuvenation. For a detailed description of the science of Pranayama and the various breathing techniques employed. Meditation and concentration is covered in detail elsewhere. An affirmation is a declaratory statement of yourself.