While practicing Tibetan Pranayama, one should visualize breath as white light. This is to realize the prana/chi aspect of the practice and not just consider it as air or oxygen. Remember it is the vital life force of self and of all things.
While focusing on your breath, try and imagine your attention or mind as literally riding on top of the breath.
Just like you are floating on the breath, staying with it the entire way, so as your breath and your attention become one.
However, an easier beginner’s practice is to do just the breathing without visualization.
Practicing Tibetan Pranayama requires some experience with other Pranayama breathing techniques.
"Many times you can feel drained of this energy or low in vitality, this is a perfect time to practise 9 round breathing to re-invigorate yourself," says Christine English