Breathing is an important element of yoga practice. If your breathing isn’t relaxed, your body can’t relax into the poses. If your body isn’t relaxed, your mind can’t relax.
One of the five principles of yoga is Pranayama or breathing exercise which promotes proper breathing.
In a Yogic point of view, proper breathing is to bring more oxygen to the blood and to the brain, and to control Prana or the vital life energy. Pranayama Yoga also goes hand in hand with the Asanas. The union of these two yogic principles is considered as the highest form of purification and self-discipline, covering both mind and body.
When you begin your Yoga breathing, you should begin by filling your diaphragm with air slowly. Take in a deep cleansing breath, through your nose and then out through your nose just as slowly.
When you breathe in deeply you are providing your body with the rich oxygen it requires. Further, when you breathe out, or just when you are breathing in general, you are pushing out various toxins that must be eliminated from your body.
Good posture is important. With your back straight, your shoulders back and your abdomen in, you are allowing your lungs to expand to their full potential and they are therefore allowed to take in more oxygen.
Most importantly don’t forget to breathe when mastering your breathing technique! Don’t try to force what your body knows how to do naturally, or you may end up feeling dizzy. If this occurs stop the breathing exercise and continue at a later time.