Which is a common symptom of hyperventilation?

The common symptom of hyperventilation is an increased heart rate. Hyperventilation, which occurs when a person breathes very rapidly, causes a reduction in carbon dioxide levels in the blood. This physiological response influences various body systems, leading to symptoms such as an increased heart rate, lightheadedness, tingling sensations, and sometimes feelings of anxiety.

While drowsiness may occur with other respiratory or cardiovascular issues, it is not typically a direct symptom of hyperventilation. Hyperventilation more often leads to heightened alertness rather than drowsiness. Additionally, a decreased breathing rate is contrary to the definition of hyperventilation, as it defines the condition by an increase in breathing rate, not a decrease. A sense of well-being is also less commonly associated with hyperventilation, as the experience often includes discomfort or distress rather than a feeling of well-being. The physiological impacts of hyperventilation are primarily characterized by symptoms related to rapid breathing and its effects on the body, particularly increased heart rate.