By
  1. Keep mouth closed; No mouth breathing
  2. Keep right nostril closed and inhale/exhale through left nostril couple of times
  3. Shut both nostrils; Hold
  4. Open right nostril
  5. Keep left nostril closed and Inhale/exhale through right nostril couple of times
  6. Shut both nostrils; Hold
  7. Go back to 2; Repeat couple of times