Proponents of this oxygen "therapy" say it boosts energy levels, increases your endurance during exercise, helps you bounce back more quickly from physical exertion, provides relief from stress ...

Chronic respiratory infections, like bronchitis or pneumonia, can make life difficult, especially for people with conditions ...

The cardio-respiratory system works together to get oxygen to the working muscles and remove carbon dioxide from the body. During exercise the muscles need more oxygen in order to contract and ...