Yogasana
  Chanderbhedi Pranayama
 
1. Sit in a comfortable posture, keeping the head, neck, and spine in a straight line.
2. Place the right thumbs on the right nostril, the right index finger between the eyebrows and rest the middle finger against the left nostril.
   
 
First Method:-
1. close the right nostril and gradually inhale through the left nostril, filling the lungs completely.
2. Retain the breath momentarily, then, closing the left nostril, exhale completely through the right nostril.
3. Pause momentarily before repeating. Repeat nine times.
   
Second Method:-
1. Inhale through the left nostril, retain it, then exhale through the same nostril, pausing before repeating the process.
2. It can also be practiced without retention or pause.
   
  Start with three pranayamas, extending this to twenty-seven;nine in the morning, nine at noon and nine in the evening per day.
   
 
1.
It reduces bile, purifies the blood, provides vigour and makes a person's nature peaceful.
   
 
  It increases cold, so it should not be practiced in winter. Those laden with bile can practice it for pacifying heat, but those laden with cold and phlegm should perform this exercise in moderation. All should begin by breathing through the left nostril in summer and the right nostril in winter.