Respiratory therapy promotes respiratory health which to a greater extent is essential as many people have been affected by respiratory diseases, and these numbers are increasing day by day. Respiratory therapy helps patients with breathing problems (lung problems) in opening the air passages, thus controlling symptoms of shortness of breath. Respiratory disease affects the airways & other parts of the lungs. Some common diseases under the respiratory system include asthma, chronic obstructive pulmonary disease (COPD), pneumonia, tuberculosis & other lung conditions. COPD alone causes an estimated death of about 6% each year.