Pranayama is the science of life, and prana when it is only the breath is called the shvasa. Shvasa and prana are interlinked. And therefore, if you keep your shvasa under certain conditions, your prana gets activated.
About The Satsang Foundation
The Satsang Foundation, founded by Sri M, is a meeting point for spiritual seekers of all persuasions. The Satsang Foundation also extends a helping hand to the less privileged of society.