This healing is done by sadhak. Sadhak mean the person who has practice how to tap & connect with this cosmic energy & how he can help the person. To heal his situation & disease in a powerful manner.
Sadhak is one who has been bleesed by GURU. Guru give him inlightment & guidance of various Yogic activities
Before and during a healing session:
healing the particular illness (emotional or physical). It's really not harder to heal a headache than a more complicated illness if the circumstances are right. During the healing session some may or may not feel anything. If somebody doesn’t feel anything, this doesn't mean that the healing was not successful. Instead it only means that the individual don't have the ability to sense the healing energy - some people do and others don't.