Our nervous system and Immune system are connection between our physical body and subtle energy body. When there is any disorders related to nervous and immune system, there is a very significant imbalance of energy in the system.In our body Masculine and feminine energy [ yin and yan] need to in balance. The more severe the disease more imbalance of both energy. In Past life regression , person becomes aware of the imbalance , in form of different body sensations, like...heaviness, jerks, lightness. The wareness and release helps in integrating the two energy and results in healing.