Next the yogin learned to control his breathing, an even greater assault on his instinctual life. Respiration is the most fundamental and automatic of our physical functions, and is absolutely essential to life. In pranayama, however, the yogin learned to breathe more and more slowly. His aim was to pause for as long as possible between exhalation and inhalation, so that it seemed as though respiration had entirely ceased. His heart rate slowed down; he might even appear to be dead, and yet, once he had become adept at pranayama, he experienced a new kind of life. This controlled respiration,
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