Paramahansa Yogananda wrote that physical diseases are caused mainly by weakening of the life force. We should practice self-control by absorbing the vital electric current. He indicated to send vital healing power to the weakened body part. First inhale, visualize the energy in the medulla oblongata. Then concentrate on the spiritual eye. Direct the energy from the point between the eyebrows to the diseased body part. Feel the energy burning up disease. Exhale. Repeat this exercise three times.