“Pranayama is control of Breath”.
“Prana” is Breath or vital energy in the body. On subtle levels prana represents the pranic energy responsible for life or life force, and “ayama” means control. So Pranayama is “Control of Breath”. One can control the rhythms of pranic energy with pranayama and achieve healthy body and mind.
Breathing is an involuntary act; it is an essential part of life. Although we cannot control whether or not we breathe, we can control the way that we breathe. A belief that different methods of breath affect the body’s health and life force is the core of Pranayama practice.