Hyperventilation refers to fast breathing. In some cases, people who hyperventilate may breathe deeper than usual. Hyperventilation may occur due to an underlying condition or emotional distress. A ...

The body has a set of physiological responses to danger: the pupils dilate, respiration deepens, heart rate and blood pressure rise, muscles tense for action. The gastro-intestinal system reacts also.

Hyperventilation occurs when you start to breathe very quickly, causing an imbalance between inhaling oxygen and exhaling carbon dioxide (CO 2). This reduces the amount of CO 2 in the body. Low carbon ...