Mindful breathing, also called relaxation breathing or belly breathing will optimize oxygen intake. (This is especially important for cancer patients.) Inhale bottom up, filling with air like a water balloon. Start by pushing out the abdominal muscles, then expand the upper chest, pause, then a slow exhale to empty. This reduces anxiety and benefits tissues near the heart. The area is sensitive to changes in oxygenation of the blood. The breathing modifies the heart rate and sends messages to the brain for calm.
In meditation, start with a few belly breaths, then just observe the in and outs. It’s about using this as an object of observation. It will create focus.
If frightened, focus on your breathing. Then go into the mindful breathing. It will help to alleviate the fear and anxiety.
Feel alive with breathing!