The scholar should sit in Svastika posture, keep his mind free from tensions, inhale the breathing air through both nostrils and carry it over all regions starting from the foot to the head. He should retain the breathing air on both feet, Muladhara, navel region, middle region of heart, at the root of throat, palate, in the middle of brows, forehead and in the head. The retention of the breathing air gradually on these all parts of the body is called 'Pratyähära'.