Bacterial pneumonia is an infection caused by the presence of bacteria within the lungs. The most common cause of this type of infection is a bacterium called streptococcus pneumoniae, according to the Cleveland Clinic.

Breathing exercise machines help to increase lung volume and minimize mucus and fluid in the lungs. Normally a person spontaneously and unconsciously takes several deep breaths per hour.

Ionizers are devices that disperse negatively or positively charged ions which attach to particles in the air. The particulate matter is then collected by the ionizer or attaches to nearby surfaces. Ionizers are typically sold as "air purifiers" that remove allergen or asthma-inducing particles from the air.

A high altitude brings with it beautiful scenery and what feels like thinner air. You may be on vacation at a high altitude or be participating in rock climbing or hiking and find you are struggling for breath. Your body increases your respiration rate in an effort to bring in more oxygen.

Calcium is a necessary mineral for bone health. In certain conditions, however, calcium may form small growths in the lungs or other organs. When a calcium growth appears in the lungs, it is called a pulmonary granuloma, according to MayoClinic.com.

Most people experience shortness of breath, a condition medically known as dyspnea, periodically usually due to factors like physical exertion.

Shortness of breath, also called dyspnea, refers to uncomfortable respiratory sensations. Numerous factors may contribute to or cause shortness of breath after eating, including heart problems, digestive problems and anxiety disorders.

The two types of cramps people experience are muscle cramps or menstrual cramps. Muscle cramps are a sudden, involuntary contraction of one or more of your muscles. Menstrual cramps are experienced in the female reproductive system during menstruation.

Walking pneumonia is the common term for pneumonia that has mild symptoms and is typically not life-threatening. (see ref 2) Pneumonia is a lung infection that may be caused by a bacteria, a fungus or a virus.

A tightened airway can result when the smooth muscular layers of your lungs spasm, swell and constrict your airflow. An episode can be mild and manageable or severe, requiring immediate medical treatment. Tight airways usually are caused by colds, viral infections, allergens or irritants that trigger lung inflammation.

Lung infections can be bacterial, viral, fungal or parasitic and can range from minor to life threatening. As with other sources of infection, bacteria can cause inflammation in the lungs -- pneumonia -- or in the trachea and its branches -- bronchitis, although most cases of bronchitis tend to be viral (2, 3, 4).

Cigarette smokers experience changes in their lung function that may affect the ability to breathe deeply. Breathing exercises can help to relieve this problem by re-training your lungs to breathe more deeply. Smokers also can use deep breathing techniques to relieve stress when trying to quit smoking.