Word-Pranayama

​“Prana is a Sanskrit word that means life force [energy] and ayama means extending or stretching. Thus, the word “pranayama” translates to the control of life force. It is also known as the extension of breath. Every cell in our bodies needs oxygen to function properly.” – onemedical.com
 
Noticing the breath and becoming aware of how it works in your body, is the prelude to pranayama exercises.  It could be as simple as noticing changes in the body shape, the temperature, the sound, the shallowness or depth, or how the breath makes you feel.
 
An example of a basic breath practice is to stop, close your eyes, and focus your awareness on your breath flowing in and out of your body.  On your breath in, notice how your body changes shape.  On your breath out, release any tension you may be holding.  Do this practice for a few minutes and notice how you feel.