Discover "back breathing" and Jeff''s comparison to two barrels moving apart. This form of breath is more of an advanced technique. It's best to do this while standing in one spot as opposed to during the Qigong exercises. Visualization is an important part of it. Feel your body open and expand.
Other breathing videos you might like:
Should You Breathe Through Mouth or Nose?
Qi Chat - Qigong and Breathing:
Intro for the Simple Mindful Breathing Routine: