This diagram came from the National Institutes of Health: COPD Essentials for Health Professionals. I agree with the contents, but not the order. Specifically, I think pulmonary rehabilitation should be moved into the top rectangle or layer. Pulmonary rehabilitation means essentially exercise in my opinion. The proper components are flexibility, aerobic endurance, and strength. This "rehabilitation" should be in the base layer for the treatment of virtually every disease I can think of including asthma. So get exercising!