Which would most likely result in hyperventilation?

• A. Emotional tension, anxiety, or fear
• B. Being well-rested
• C. Eating a heavy meal
• D. Sitting still in calm weather

Answer: (A)

Hyperventilation is driven by the body’s stress response. When you feel emotional tension, anxiety, or fear, the fight-or-flight system prompts you to breathe more rapidly. That faster breathing decreases the level of carbon dioxide in your blood, which can make you feel lightheaded, tingling, or dizzy.

Because of that direct link between stress and rapid breathing, emotional tension, anxiety, or fear is the most likely trigger for hyperventilation. The other scenarios don’t push you into that rapid-breathing pattern: being well-rested tends to promote calm, steady breathing; a heavy meal often leads to a more relaxed, slower state or sleepiness; sitting still in calm weather corresponds to relaxed breathing as well.