Respiratory tract infections (RTIs) are among the most frequent illnesses worldwide, ranging from mild colds to serious ...

You may take breathing for granted, thinking that it is just an involuntary reflex action. But for the millions of people who suffer from respiratory diseases, each breath is a major accomplishment.

Wesley Freppel does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

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 they ...